Out-of-bounds read in libsndfile (Alpine package)

1) Out-of-bounds read

EUVDB-ID: #VU18790

Risk: Low

CVSSv4.0: 0.2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-3832

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the wav_write_header() function in wav.c file when processing media content. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and crash the affected application.

Note: this vulnerability is a result of an unresolved issues, described in SB2018112313 (#5).

Mitigation

Install update from vendor's website.

Vulnerable software versions

libsndfile (Alpine package): 1.0.28-r4

CPE2.3

• cpe:2.3:a:alpine:libsndfile_alpine_package:1.0.28-r4:*:*:*:*:alpine_linux:*:3.6

External links

https://git.alpinelinux.org/aports/commit/?id=83d74e47d53224f58b4350ae12ffbe8f508593e6
https://git.alpinelinux.org/aports/commit/?id=1245056475ad59a71c91494d1e1820f323e22911
https://git.alpinelinux.org/aports/commit/?id=3703250ef2269941c344056e51531ea3c4aede77
https://git.alpinelinux.org/aports/commit/?id=afcf91b3195a7e0e88b3c570d405ddd1f4591460

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.