Memory leak in ffmpeg (Alpine package)

1) Memory leak

EUVDB-ID: #VU10927

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-2018-7757

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the drivers/scsi/libsas/sas_expander.c source code in the sas_smp_get_phy_events function due to memory leak. A local attacker can trigger memory corruption and cause the system to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

ffmpeg (Alpine package): 4.0.2-r0 - 4.0.6-r0

CPE2.3

• cpe:2.3:o:alpine:ffmpeg_alpine_package:4.0.2-r0:*:*:*:*:alpine_linux:*:3.9
• cpe:2.3:o:alpine:ffmpeg_alpine_package:4.0.4-r0:*:*:*:*:alpine_linux:*:3.9
• cpe:2.3:o:alpine:ffmpeg_alpine_package:4.0.6-r0:*:*:*:*:alpine_linux:*:3.9

External links

https://git.alpinelinux.org/aports/commit/?id=d8d38dabc6e30c901eb6bd6627d8337849d7c041
https://git.alpinelinux.org/aports/commit/?id=cf78a820406ae4481e937bc2fba252ff79c89a09
https://git.alpinelinux.org/aports/commit/?id=859fd99d06049c009c8b745626511cd681061a99
https://git.alpinelinux.org/aports/commit/?id=67e1fa48160c4e435007390d685bdfacd84ea1f0

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.