What is the CVSS score of CVE-2015-1821?

CVE-2015-1821 has a CVSS 2.0 base score of 6.5 (Medium). CVSS vector: AV:N/AC:L/Au:S/C:P/I:P/A:P. EPSS exploitation probability: 2.6%.

Is there a patch available for CVE-2015-1821?

Yes, a patch is available for CVE-2015-1821. Update the affected software to the latest version immediately.

Chrony CVE-2015-1821

MEDIUM

Buffer Overflow (CWE-119)

2015-04-16 secalert@redhat.com

Denial Of Service RCE Buffer Overflow Chrony Debian Linux

6.5

CVSS 2.0 · NVD

Severity by source

NVD PRIMARY

6.5 MEDIUM

AV:N/AC:L/Au:S/C:P/I:P/A:P

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

AV:N/AC:L/Au:S/C:P/I:P/A:P

Attack Vector

Network

Attack Complexity

Low

Confidentiality

Integrity

Availability

Lifecycle Timeline

CVE Published

Apr 16, 2015 - 14:59 cve.org

MEDIUM 6.5

DescriptionCVE.org

Heap-based buffer overflow in chrony before 1.31.1 allows remote authenticated users to cause a denial of service (chronyd crash) or possibly execute arbitrary code by configuring the (1) NTP or (2) cmdmon access with a subnet size that is indivisible by four and an address with a nonzero bit in the subnet remainder.

AnalysisAI

Heap-based buffer overflow in chrony before 1.31.1 allows remote authenticated users to cause a denial of service (chronyd crash) or possibly execute arbitrary code by configuring the (1) NTP or (2). Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity.

Technical ContextAI

This vulnerability is classified as Buffer Overflow (CWE-119), which allows attackers to corrupt memory to execute arbitrary code or crash the application. Heap-based buffer overflow in chrony before 1.31.1 allows remote authenticated users to cause a denial of service (chronyd crash) or possibly execute arbitrary code by configuring the (1) NTP or (2) cmdmon access with a subnet size that is indivisible by four and an address with a nonzero bit in the subnet remainder. Affected products include: Tuxfamily Chrony, Debian Debian Linux. Version information: before 1.31.1.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Use memory-safe languages or bounds-checking. Enable ASLR, DEP/NX, stack canaries. Use safe string functions.