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
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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

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

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

http://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

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-20446

CWE-ID: CWE-400 - Uncontrolled Resource Consumption ('Resource Exhaustion')

Exploit availability: No

Description

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

The vulnerability exists due to incorrect processing of nested patterns within SVG files in xml.rs in GNOME librsvg. A remote attacker can create a specially crafted SVG file, pass if to the affected application, trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

librsvg: 2.44.0 - 2.47.1


CPE2.3 External links

http://gitlab.gnome.org/GNOME/librsvg/issues/515

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.



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