Several vulnerabilities were discovered in libcaca, a graphics library that outputs text: integer overflows, floating point exceptions or invalid memory reads may lead to a denial of service (application crash) if a malformed image file is processed.

For Debian 8 'Jessie', these problems have been fixed in version 0.99.beta19-2+deb8u1.

We recommend that you upgrade your libcaca packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for libcaca fixes the following issues :

Security issues fixed :

  - CVE-2018-20544: Fixed a floating point exception at     caca/dither.c (bsc#1120502)

  - CVE-2018-20545: Fixed a WRITE memory access in the     load_image function at common-image.c for 4bpp     (bsc#1120584)

  - CVE-2018-20546: Fixed a READ memory access in the     get_rgba_default function at caca/dither.c for bpp     (bsc#1120503)

  - CVE-2018-20547: Fixed a READ memory access in the     get_rgba_default function at caca/dither.c for 24bpp     (bsc#1120504)

  - CVE-2018-20548: Fixed a WRITE memory access in the     load_image function at common-image.c for 1bpp     (bsc#1120589)

  - CVE-2018-20549: Fixed a WRITE memory access in the     caca_file_read function at caca/file.c (bsc#1120470)

This update was imported from the SUSE:SLE-15:Update update project.

It was discovered that libcaca incorrectly handled certain images. An attacker could possibly use this issue to cause a denial of service.
(CVE-2018-20544)

It was discovered that libcaca incorrectly handled certain images. An attacker could possibly use this issue to execute arbitrary code.
(CVE-2018-20545, CVE-2018-20548, CVE-2018-20459)

It was discovered that libcaca incorrectly handled certain images. An attacker could possibly use this issue to access sensitive information. (CVE-2018-20546, CVE-2018-20547).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for libcaca fixes the following issues :

Security issues fixed :

CVE-2018-20544: Fixed a floating point exception at caca/dither.c (bsc#1120502)

CVE-2018-20545: Fixed a WRITE memory access in the load_image function at common-image.c for 4bpp (bsc#1120584)

CVE-2018-20546: Fixed a READ memory access in the get_rgba_default function at caca/dither.c for bpp (bsc#1120503)

CVE-2018-20547: Fixed a READ memory access in the get_rgba_default function at caca/dither.c for 24bpp (bsc#1120504)

CVE-2018-20548: Fixed a WRITE memory access in the load_image function at common-image.c for 1bpp (bsc#1120589)

CVE-2018-20549: Fixed a WRITE memory access in the caca_file_read function at caca/file.c (bsc#1120470)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Published	Updated	Severity
121055	Debian DLA-1631-1 : libcaca security update	Nessus	Debian Local Security Checks	1/10/2019	1/11/2021	high
123774	openSUSE Security Update : libcaca (openSUSE-2019-1144)	Nessus	SuSE Local Security Checks	4/5/2019	1/19/2021	high
121212	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : libcaca vulnerabilities (USN-3860-1)	Nessus	Ubuntu Local Security Checks	1/16/2019	10/20/2023	high
123446	SUSE SLED15 / SLES15 Security Update : libcaca (SUSE-SU-2019:0770-1)	Nessus	SuSE Local Security Checks	3/28/2019	1/13/2021	high
130942	SUSE SLES12 Security Update : libcaca (SUSE-SU-2019:2745-2)	Nessus	SuSE Local Security Checks	11/13/2019	4/11/2024	high
130166	SUSE SLED12 / SLES12 Security Update : libcaca (SUSE-SU-2019:2745-1)	Nessus	SuSE Local Security Checks	10/23/2019	4/17/2024	high

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