What is CVE-2018-20547?

CVE-2018-20547 is a high-severity software vulnerability (Memory corruption) with a CVSS score of 8.1. There is an illegal READ memory access at caca/dither.c (function get_rgba_default) in libcaca 0.99.beta19 for 24bpp data.

Is CVE-2018-20547 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 2%.

What products does CVE-2018-20547 affect?

Tracked products affected include Fedora. Check the version you run to see whether it is affected.

How do I fix CVE-2018-20547?

Apply the vendor fix promptly. An official patch or advisory is available. Upgrade affected products to a fixed version.

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CVE-2018-20547

HIGH severity · CVSS 8.1 · Memory corruption

8.1CVSS HIGH

Summary

There is an illegal READ memory access at caca/dither.c (function get_rgba_default) in libcaca 0.99.beta19 for 24bpp data.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionRequired

Confidentiality impactHigh

Integrity impactNone

Availability impactHigh

Exploit probability (EPSS)2%

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Affected products we track (1)

Fedora

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: https://bugzilla.redhat.com/show_bug.cgi?id=1652624 ↗

Additional information

NVD record
https://bugzilla.redhat.com/show_bug.cgi?id=1652624Patch
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00033.htmlAdvisory
https://lists.debian.org/debian-lts-announce/2019/01/msg00007.htmlAdvisory
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/Advisory
https://usn.ubuntu.com/3860-2/Advisory