PT-2018-2599 · Libcaca+2 · Libcaca+2

Shuitao Gan · Published 2018-11-22 · Updated 2025-01-13 · CVE-2018-20547

Positive Technologies (AI Summary)

CVSS v2.0

8.8

High

Base vector

AV:N/AC:M/Au:N/C:C/I:N/A:C

Name of the Vulnerable Software and Affected Versions libcaca version 0.99.beta19

Description The issue is related to an integer overflow in the get rgba default function, located in caca/dither.c, which can lead to an illegal READ memory access, particularly for 24bpp data. This can potentially allow a remote attacker to gain unauthorized access to protected information.

Recommendations For libcaca version 0.99.beta19, consider disabling the get rgba default function as a temporary workaround until a patch is available. Restrict access to the caca/dither.c module to minimize the risk of exploitation. Avoid using the affected function for 24bpp data until the issue is resolved.

Exploit

Fix

Integer Overflow

Buffer Overflow

Weakness Enumeration

CWE-190

CWE-119

Related Identifiers

BDU:2019-01075

CVE-2018-20547

DLA-1631-1

MGASA-2019-0050

OPENSUSE-SU-2019:1144-1

OPENSUSE-SU-2019_1144-1

OPENSUSE-SU-2024:12537-1

ROSA-SA-2025-2554

SUSE-SU-2019:0770-1

SUSE-SU-2019:2745-1

SUSE-SU-2019:2745-2

USN-3860-1

USN-3860-2

Affected Products

Suse

Ubuntu

Libcaca

References · 94

• 🔥 https://bugzilla.redhat.com/show_bug.cgi?id=1652624 · Exploit
• https://bdu.fstec.ru/vul/2021-05484 · Security Note
• https://usn.ubuntu.com/3860-2 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-20547 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20548 · Security Note
• https://security-tracker.debian.org/tracker/DLA-1631-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-01072 · Security Note
• https://security-tracker.debian.org/tracker/source-package/libcaca · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-01622 · Security Note
• https://wiki.astralinux.ru/astra-linux-se16-bulletin-20200327SE16 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2019-0050.html · Security Note
• https://osv.dev/vulnerability/USN-3860-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-20547 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3860-2 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:2745-1 · Vendor Advisory