Denial of service in librsvg

Published: 2020-01-31 | Updated: 2020-02-06

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2019-20446
CWE-ID	CWE-835 CWE-400
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	librsvg Universal components / Libraries / Libraries used by multiple products
Vendor	Gnome Development Team

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

Updated: 06.02.2020

Added vulnerability #2.

1) Infinite loop

EUVDB-ID: #VU24811

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: N/A

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop in when processing CSS sibling combinators. A remote attacker can consume all available system resources and cause denial of service conditions.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

librsvg: 2.47.0 - 2.47.1

CPE2.3

External links

https://gitlab.gnome.org/GNOME/librsvg/blob/master/NEWS

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) Resource exhaustion

EUVDB-ID: #VU25011