Improper input validation in linux-grsec (Alpine package)
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2015-7872 |
| CWE-ID | CWE-20 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software |
linux-grsec (Alpine package) Operating systems & Components / Operating system package or component |
| Vendor | Alpine Linux Development Team |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Improper input validation
EUVDB-ID: #VU2510
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2015-7872
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists in the key_gc_unused_keys function in security/keys/gc.c due to improper input validation. A local attacker can submit specially crafted keyctl commands and cause the service to crash.
Install update from vendor's website.
Vulnerable software versionslinux-grsec (Alpine package): 3.18.21-r2 - 4.1.39-r0
CPE2.3- cpe:2.3:o:alpine:linux-grsec_alpine_package:3.18.21-r2:*:*:*:*:alpine_linux:*:3.2
- cpe:2.3:o:alpine:linux-grsec_alpine_package:4.1.39-r0:*:*:*:*:alpine_linux:*:3.3
https://git.alpinelinux.org/aports/commit/?id=00c62c4b663a8ab18f9fe0fe1586dd1b1fb065a1
https://git.alpinelinux.org/aports/commit/?id=4e1c1da17e075b7dbabef56d8f11b1b31f89bed9
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
