#VU27952 Out-of-bounds read in libcroco - CVE-2017-7960

Vulnerability identifier: #VU27952

Vulnerability risk: Medium

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

CVE-ID: CVE-2017-7960

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libcroco
Universal components / Libraries / Libraries used by multiple products

Vendor: Gnome Development Team

Description

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

The vulnerability exists due to a boundary error in the cr_input_new_from_uri function in cr-input.c in libcroco. A remote attacker can perform a denial of service (heap-based buffer over-read) via a crafted CSS file.

Mitigation
Install update from vendor's website.

Vulnerable software versions

libcroco: 0.6.11 - 0.6.12

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External links
https://lists.opensuse.org/opensuse-security-announce/2019-06/msg00043.html
https://blogs.gentoo.org/ago/2017/04/17/libcroco-heap-overflow-and-undefined-behavior/
https://git.gnome.org/browse/libcroco/commit/?id=898e3a8c8c0314d2e6b106809a8e3e93cf9d4394
https://security.gentoo.org/glsa/201707-13

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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.