Integer overflow in Debian Linux

1) Integer overflow

EUVDB-ID: #VU37734

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-17854

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a local authenticated user to execute arbitrary code.

kernel/bpf/verifier.c in the Linux kernel through 4.14.8 allows local users to cause a denial of service (integer overflow and memory corruption) or possibly have unspecified other impact by leveraging unrestricted integer values for pointer arithmetic.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Debian Linux: 9.0

CPE2.3

• cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

External links

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bb7f0f989ca7de1153bd128a40a71709e339fa03
https://www.openwall.com/lists/oss-security/2017/12/21/2
https://github.com/torvalds/linux/commit/bb7f0f989ca7de1153bd128a40a71709e339fa03

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.