What’s Vulnerable › Vulnerabilities

CVE-2018-20546

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-12-28 · updated 2026-06-17
• Weakness: CWE-190

Description

There is an illegal READ memory access at caca/dither.c (function get_rgba_default) in libcaca 0.99.beta19 for the default bpp case.

Affected products

• Canonical Ubuntu Linux: 12.04, 14.04, 16.04, 18.04, 18.10
• Debian Linux: 8.0
• Fedoraproject Fedora: 34, 35, 36
• Libcaca Project Libcaca: 0.99-beta19
• openSUSE Leap: 15.0

References

• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00033.html
• https://bugzilla.redhat.com/show_bug.cgi?id=1652622
• https://github.com/cacalabs/libcaca/commit/1022d97496c7899e8641515af363381b31ae2f05
• https://github.com/cacalabs/libcaca/issues/38
• https://lists.debian.org/debian-lts-announce/2019/01/msg00007.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6WFGYICNTMNDNMDDUV4G2RYFB5HNJCOV/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PC7EGOEQ5C4OD66ZUJJIIYEXBTZOCMZX/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZSBCRN6EGQJUVOSD4OEEQ6XORHEM2CUL/
• https://usn.ubuntu.com/3860-1/
• https://usn.ubuntu.com/3860-2/
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00033.html
• https://bugzilla.redhat.com/show_bug.cgi?id=1652622

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