Cups
Monthly
OpenPrinting CUPS before version 2.4.17 allows network-adjacent attackers to read up to 176 bytes of stack memory via a crafted SNMP response sent to the CUPS SNMP backend, with leaked data visible to authenticated users through IPP Get-Printer-Attributes responses and the web interface. The vulnerability requires adjacency on the network but no authentication, making it a low-severity information disclosure risk in environments where SNMP-enabled printers are accessible from untrusted networks.
Local denial of service and potential remote code execution in OpenPrinting CUPS 2.4.16 and prior occurs when the scheduler (cupsd) deletes temporary printers without expiring associated subscriptions, leaving dangling pointers in memory that are subsequently dereferenced. An unauthenticated local attacker can crash the cupsd daemon or, with heap grooming techniques, achieve arbitrary code execution on systems running affected CUPS versions.
Denial of service in OpenPrinting CUPS 2.4.16 and prior allows unprivileged local users to crash the cupsd root process via integer underflow in _ppdCreateFromIPP() by supplying a negative job-password-supported IPP attribute, which wraps to a large size_t value and triggers a stack buffer overflow in memset(). When combined with systemd's automatic restart mechanism, an attacker can sustain repeated crashes without requiring elevated privileges or user interaction.
Unauthenticated remote code execution in OpenPrinting CUPS 2.4.16 and earlier allows attackers to send print jobs to shared PostScript queues without authentication, exploit a newline injection vulnerability in page-border parameter handling, and execute arbitrary binaries as the lp user by chaining a follow-up raw print job. CISA KEV status and active exploitation confirmation not provided; no publicly available patches identified at publication.
Heap-based buffer overflow in OpenPrinting CUPS scheduler versions 2.4.16 and prior allows unauthenticated remote attackers to trigger a denial of service condition by crafting malicious job attributes that overflow buffers during filter option string construction. With a CVSS score of 5.3 and network accessibility, this vulnerability impacts availability on exposed CUPS instances; no public exploit code or vendor patch has been released as of publication.
Path traversal in OpenPrinting CUPS RSS notifier (versions 2.4.16 and prior) allows unauthenticated remote IPP clients to write arbitrary files outside the intended CacheDir/rss directory via a crafted notify-recipient-uri parameter. By exploiting default group-writable permissions on CacheDir, attackers can overwrite critical state files such as job.cache, causing the CUPS scheduler to fail parsing job queues and resulting in loss of previously queued print jobs. No public exploit code or vendor patch is currently available, though the vulnerability is demonstrated with proof-of-concept exploitation.
Local privilege escalation in OpenPrinting CUPS 2.4.16 and prior allows unprivileged users to bypass authentication and create arbitrary file overwrites as root by coercing cupsd into issuing reusable Authorization tokens and leveraging printer-sharing policies to persist file:// URIs that bypass FileDevice restrictions. A proof-of-concept demonstrates root command execution via sudoers file modification, and the vulnerability is confirmed by the presence of public exploit code.
CUPS daemon (cupsd) versions 2.4.16 and earlier authenticate users via case-insensitive username comparison, allowing an authenticated high-privileged user to bypass authorization controls by submitting requests under a username that differs only in case from an authorized user, gaining access to restricted printing operations. No public exploit code has been identified, and patches were not available at the time of initial disclosure, though a upstream commit indicates a fix may have been prepared.
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Rated medium severity (CVSS 6.0), this vulnerability is low attack complexity. Public exploit code available.
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Rated medium severity (CVSS 5.1), this vulnerability is no authentication required. Public exploit code available.
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Rated medium severity (CVSS 6.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Rated high severity (CVSS 8.0), this vulnerability is no authentication required, low attack complexity. Public exploit code available.
Due to failure in validating the length provided by an attacker-crafted PPD PostScript document, CUPS and libppd are susceptible to a heap-based buffer overflow and possibly code execution. Rated high severity (CVSS 7.0), this vulnerability is no authentication required. Public exploit code available and no vendor patch available.
OpenPrinting CUPS is a standards-based, open source printing system for Linux and other Unix-like operating systems. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity. Public exploit code available.
OpenPrinting CUPS is an open source printing system. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A logic issue was addressed with improved state management. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity.
A Incorrect Default Permissions vulnerability in the packaging of cups of SUSE Linux Enterprise Server 11-SP4-LTSS, SUSE Manager Server 4.0, SUSE OpenStack Cloud Crowbar 9; openSUSE Leap 15.2,. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. No vendor patch available.
The CUPS AppArmor profile incorrectly confined the dnssd backend due to use of hard links. Rated high severity (CVSS 8.8), this vulnerability is low attack complexity. No vendor patch available.
Cross-site scripting (XSS) vulnerability in the cgi_puts function in cgi-bin/template.c in the template engine in CUPS before 2.0.3 allows remote attackers to inject arbitrary web script or HTML via. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. Public exploit code available and EPSS exploitation probability 58.8%.
The add_job function in scheduler/ipp.c in cupsd in CUPS before 2.0.3 performs incorrect free operations for multiple-value job-originating-host-name attributes, which allows remote attackers to. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and EPSS exploitation probability 81.7%.
Integer underflow in the cupsRasterReadPixels function in filter/raster.c in CUPS before 2.0.2 allows remote attackers to have unspecified impact via a malformed compressed raster file, which. Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable. No vendor patch available.
The web interface in CUPS before 2.0 does not check that files have world-readable permissions, which allows remote attackers to obtains sensitive information via unspecified vectors. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity.
CUPS before 2.0 allows local users to read arbitrary files via a symlink attack on (1) index.html, (2) index.class, (3) index.pl, (4) index.php, (5) index.pyc, or (6) index.py. Rated low severity (CVSS 1.9).
The web interface in CUPS 1.7.4 allows local users in the lp group to read arbitrary files via a symlink attack on a file in /var/cache/cups/rss/ and language[0] set to null. Rated low severity (CVSS 1.5).
The web interface in CUPS before 1.7.4 allows local users in the lp group to read arbitrary files via a symlink attack on a file in /var/cache/cups/rss/. Rated low severity (CVSS 1.2). No vendor patch available.
Cross-site scripting (XSS) vulnerability in scheduler/client.c in Common Unix Printing System (CUPS) before 1.7.2 allows remote attackers to inject arbitrary web script or HTML via the URL path,. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. No vendor patch available.
lppasswd in CUPS before 1.7.1, when running with setuid privileges, allows local users to read portions of arbitrary files via a modified HOME environment variable and a symlink attack involving. Rated low severity (CVSS 1.2). Public exploit code available and no vendor patch available.
CUPS 1.4.4, when running in certain Linux distributions such as Debian GNU/Linux, stores the web interface administrator key in /var/run/cups/certs/0 using certain permissions, which allows local. Rated high severity (CVSS 7.2), this vulnerability is low attack complexity. Public exploit code available and EPSS exploitation probability 10.2%.
OpenPrinting CUPS before version 2.4.17 allows network-adjacent attackers to read up to 176 bytes of stack memory via a crafted SNMP response sent to the CUPS SNMP backend, with leaked data visible to authenticated users through IPP Get-Printer-Attributes responses and the web interface. The vulnerability requires adjacency on the network but no authentication, making it a low-severity information disclosure risk in environments where SNMP-enabled printers are accessible from untrusted networks.
Local denial of service and potential remote code execution in OpenPrinting CUPS 2.4.16 and prior occurs when the scheduler (cupsd) deletes temporary printers without expiring associated subscriptions, leaving dangling pointers in memory that are subsequently dereferenced. An unauthenticated local attacker can crash the cupsd daemon or, with heap grooming techniques, achieve arbitrary code execution on systems running affected CUPS versions.
Denial of service in OpenPrinting CUPS 2.4.16 and prior allows unprivileged local users to crash the cupsd root process via integer underflow in _ppdCreateFromIPP() by supplying a negative job-password-supported IPP attribute, which wraps to a large size_t value and triggers a stack buffer overflow in memset(). When combined with systemd's automatic restart mechanism, an attacker can sustain repeated crashes without requiring elevated privileges or user interaction.
Unauthenticated remote code execution in OpenPrinting CUPS 2.4.16 and earlier allows attackers to send print jobs to shared PostScript queues without authentication, exploit a newline injection vulnerability in page-border parameter handling, and execute arbitrary binaries as the lp user by chaining a follow-up raw print job. CISA KEV status and active exploitation confirmation not provided; no publicly available patches identified at publication.
Heap-based buffer overflow in OpenPrinting CUPS scheduler versions 2.4.16 and prior allows unauthenticated remote attackers to trigger a denial of service condition by crafting malicious job attributes that overflow buffers during filter option string construction. With a CVSS score of 5.3 and network accessibility, this vulnerability impacts availability on exposed CUPS instances; no public exploit code or vendor patch has been released as of publication.
Path traversal in OpenPrinting CUPS RSS notifier (versions 2.4.16 and prior) allows unauthenticated remote IPP clients to write arbitrary files outside the intended CacheDir/rss directory via a crafted notify-recipient-uri parameter. By exploiting default group-writable permissions on CacheDir, attackers can overwrite critical state files such as job.cache, causing the CUPS scheduler to fail parsing job queues and resulting in loss of previously queued print jobs. No public exploit code or vendor patch is currently available, though the vulnerability is demonstrated with proof-of-concept exploitation.
Local privilege escalation in OpenPrinting CUPS 2.4.16 and prior allows unprivileged users to bypass authentication and create arbitrary file overwrites as root by coercing cupsd into issuing reusable Authorization tokens and leveraging printer-sharing policies to persist file:// URIs that bypass FileDevice restrictions. A proof-of-concept demonstrates root command execution via sudoers file modification, and the vulnerability is confirmed by the presence of public exploit code.
CUPS daemon (cupsd) versions 2.4.16 and earlier authenticate users via case-insensitive username comparison, allowing an authenticated high-privileged user to bypass authorization controls by submitting requests under a username that differs only in case from an authorized user, gaining access to restricted printing operations. No public exploit code has been identified, and patches were not available at the time of initial disclosure, though a upstream commit indicates a fix may have been prepared.
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Rated medium severity (CVSS 6.0), this vulnerability is low attack complexity. Public exploit code available.
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Rated medium severity (CVSS 5.1), this vulnerability is no authentication required. Public exploit code available.
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Rated medium severity (CVSS 6.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available.
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Rated high severity (CVSS 8.0), this vulnerability is no authentication required, low attack complexity. Public exploit code available.
Due to failure in validating the length provided by an attacker-crafted PPD PostScript document, CUPS and libppd are susceptible to a heap-based buffer overflow and possibly code execution. Rated high severity (CVSS 7.0), this vulnerability is no authentication required. Public exploit code available and no vendor patch available.
OpenPrinting CUPS is a standards-based, open source printing system for Linux and other Unix-like operating systems. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity. Public exploit code available.
OpenPrinting CUPS is an open source printing system. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A logic issue was addressed with improved state management. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity.
A Incorrect Default Permissions vulnerability in the packaging of cups of SUSE Linux Enterprise Server 11-SP4-LTSS, SUSE Manager Server 4.0, SUSE OpenStack Cloud Crowbar 9; openSUSE Leap 15.2,. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. No vendor patch available.
The CUPS AppArmor profile incorrectly confined the dnssd backend due to use of hard links. Rated high severity (CVSS 8.8), this vulnerability is low attack complexity. No vendor patch available.
Cross-site scripting (XSS) vulnerability in the cgi_puts function in cgi-bin/template.c in the template engine in CUPS before 2.0.3 allows remote attackers to inject arbitrary web script or HTML via. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. Public exploit code available and EPSS exploitation probability 58.8%.
The add_job function in scheduler/ipp.c in cupsd in CUPS before 2.0.3 performs incorrect free operations for multiple-value job-originating-host-name attributes, which allows remote attackers to. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and EPSS exploitation probability 81.7%.
Integer underflow in the cupsRasterReadPixels function in filter/raster.c in CUPS before 2.0.2 allows remote attackers to have unspecified impact via a malformed compressed raster file, which. Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable. No vendor patch available.
The web interface in CUPS before 2.0 does not check that files have world-readable permissions, which allows remote attackers to obtains sensitive information via unspecified vectors. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity.
CUPS before 2.0 allows local users to read arbitrary files via a symlink attack on (1) index.html, (2) index.class, (3) index.pl, (4) index.php, (5) index.pyc, or (6) index.py. Rated low severity (CVSS 1.9).
The web interface in CUPS 1.7.4 allows local users in the lp group to read arbitrary files via a symlink attack on a file in /var/cache/cups/rss/ and language[0] set to null. Rated low severity (CVSS 1.5).
The web interface in CUPS before 1.7.4 allows local users in the lp group to read arbitrary files via a symlink attack on a file in /var/cache/cups/rss/. Rated low severity (CVSS 1.2). No vendor patch available.
Cross-site scripting (XSS) vulnerability in scheduler/client.c in Common Unix Printing System (CUPS) before 1.7.2 allows remote attackers to inject arbitrary web script or HTML via the URL path,. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. No vendor patch available.
lppasswd in CUPS before 1.7.1, when running with setuid privileges, allows local users to read portions of arbitrary files via a modified HOME environment variable and a symlink attack involving. Rated low severity (CVSS 1.2). Public exploit code available and no vendor patch available.
CUPS 1.4.4, when running in certain Linux distributions such as Debian GNU/Linux, stores the web interface administrator key in /var/run/cups/certs/0 using certain permissions, which allows local. Rated high severity (CVSS 7.2), this vulnerability is low attack complexity. Public exploit code available and EPSS exploitation probability 10.2%.