Vulnerability Assessment
| Impact | CVSS score of 5.0 (MEDIUM). Attack characteristics: network attack vector, low complexity. EPSS exploitation probability: 0.83%. |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system. |
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Alert meAnalysisAI
The devzvol_readdir function in illumos does not check the return value of a strchr call, which allows remote attackers to cause a denial of service (NULL pointer dereference and panic) via. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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Technical ContextAI · show details
The devzvol_readdir function in illumos does not check the return value of a strchr call, which allows remote attackers to cause a denial of service (NULL pointer dereference and panic) via unspecified vectors. Affected products include: Illumos.
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Severity by source
AV:N/AC:L/Au:N/C:N/I:N/A:P
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
The devzvol_readdir function in illumos does not check the return value of a strchr call, which allows remote attackers to cause a denial of service (NULL pointer dereference and panic) via unspecified vectors.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)CVE.org
The x86-64 kernel system-call functionality in Xen 4.1.2 and earlier, as used in Citrix XenServer 6.0.2 and earlier and
illumos smbsrv NULL pointer dereference allows system crash. Rated high severity (CVSS 7.5), this vulnerability is remot
An issue was discovered in illumos before 2020-10-22, as used in OmniOS before r151030by, r151032ay, and r151034y and Sm
Remote kernel heap corruption in the illumos SCTP stack lets an unauthenticated attacker send a crafted INIT ACK packet
illumos osnet-incorporation bcopy() and bzero() implementations make signed instead of unsigned comparisons allowing a s
illumos illumos-gate before 676abcb has a stack buffer overflow in /dev/net, leading to privilege escalation via a stat
Kernel memory exhaustion in the illumos name service cache daemon (nscd) lets any local, unprivileged user - including o
Host denial-of-service in illumos bhyve allows a privileged guest user to panic the host by executing a REP-prefixed MOV
Kernel heap corruption in the illumos data-link pseudo-driver (dld) allows an unprivileged local user - including one co
Local denial of service in the illumos reparsed daemon (reparsed) lets a low-privileged authenticated local user crash t
NULL pointer dereference in the illumos Network Auto-Magic daemon (nwamd) allows any local user to crash the daemon - an
Local users holding an unprivileged account in any zone on an illumos-based host can send an unauthorized ZSD_CMD_NEW_ZO
Exploit-DB