Vulnerability Details : CVE-2011-4081
crypto/ghash-generic.c in the Linux kernel before 3.1 allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact by triggering a failed or missing ghash_setkey function call, followed by a (1) ghash_update function call or (2) ghash_final function call, as demonstrated by a write operation on an AF_ALG socket.
Vulnerability category: Memory CorruptionDenial of service
Threat overview for CVE-2011-4081
Top countries where our scanners detected CVE-2011-4081
Top open port discovered on systems with this issue
49152
IPs affected by CVE-2011-4081 2,636
Threat actors abusing to this issue?
Yes
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Exploit prediction scoring system (EPSS) score for CVE-2011-4081
Probability of exploitation activity in the next 30 days: 0.04%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 6 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2011-4081
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
4.9
|
MEDIUM | AV:L/AC:L/Au:N/C:N/I:N/A:C |
3.9
|
6.9
|
NIST |
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2011-4081
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A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.Assigned by: nvd@nist.gov (Primary)
References for CVE-2011-4081
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http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7ed47b7d142ec99ad6880bbbec51e9f12b3af74c
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https://bugzilla.redhat.com/show_bug.cgi?id=749475
749475 – (CVE-2011-4081) CVE-2011-4081 kernel: crypto: ghash: null pointer deref if no key is setIssue Tracking;Patch;Third Party Advisory
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http://www.openwall.com/lists/oss-security/2011/10/27/2
oss-security - Re: CVE request: kernel: crypto: ghash: null pointer deref if no key is setMailing List;Patch;Third Party Advisory
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http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1
Mailing List;Patch;Vendor Advisory
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https://github.com/torvalds/linux/commit/7ed47b7d142ec99ad6880bbbec51e9f12b3af74c
crypto: ghash - Avoid null pointer dereference if no key is set · torvalds/linux@7ed47b7 · GitHubExploit;Patch;Third Party Advisory
Products affected by CVE-2011-4081
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*