Buffer overflow in mozjs68 (Alpine package)

1) Buffer overflow

EUVDB-ID: #VU27532

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-6831

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing SCTP chunks in WebRTC. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

mozjs68 (Alpine package): 68.7.0-r1

CPE2.3

• cpe:2.3:a:alpine:mozjs68_alpine_package:68.7.0-r1:*:*:*:*:alpine_linux:*:3.11

External links

https://git.alpinelinux.org/aports/commit/?id=8dc0bf1501171d97e4b280f12987e24bf3cc53f7
https://git.alpinelinux.org/aports/commit/?id=174183ffc582462ae8eaf468da032a6642e140c4
https://git.alpinelinux.org/aports/commit/?id=397c40a2e03948882e67f7fb7053d46e6dda50d3
https://git.alpinelinux.org/aports/commit/?id=4b76c8208fa0c29e289d14baf509b417f7c96a08
https://git.alpinelinux.org/aports/commit/?id=c9413fd0912a1f1e6cdc9e5fd25d15f4f22cc11a
https://git.alpinelinux.org/aports/commit/?id=1aeb9d76f321c652de13c181f2775af18eb8c42d

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.