Ubuntu update for musl

Published: 2023-03-31

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2019-14697 CVE-2020-28928
CWE-ID	CWE-787 CWE-835
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Ubuntu Operating systems & Components / Operating system musl (Ubuntu package) Operating systems & Components / Operating system package or component musl-dev (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU27334

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-14697

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to x87 floating-point stack adjustment imbalance, related to the math/i386/ directory. A remote attacker can pass specially crafted data to the application, trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Update the affected package musl to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 20.04

musl (Ubuntu package): before Ubuntu Pro

musl-dev (Ubuntu package): before Ubuntu Pro

External links

http://ubuntu.com/security/notices/USN-5990-1

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.

2) Infinite loop

EUVDB-ID: #VU48579