=========================================================================Ubuntu Security Notice USN-6229-1
July 13, 2023
tiff vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
- Ubuntu 14.04 LTS (Available with Ubuntu Pro)
Summary:
Several security issues were fixed in LibTIFF.
Software Description:
- tiff: Tag Image File Format (TIFF) library
Details:
It was discovered that LibTIFF was not properly handling variables used to
perform memory management operations when processing an image through
tiffcrop, which could lead to a heap buffer overflow. An attacker could
possibly use this issue to cause a denial of service or execute arbitrary
code. (CVE-2023-25433, CVE-2023-26965)
It was discovered that LibTIFF was not properly processing numerical
values when dealing with little-endian input data, which could lead to the
execution of an invalid operation. An attacker could possibly use this
issue to cause a denial of service (CVE-2023-26966)
It was discovered that LibTIFF was not properly performing bounds checks
when closing a previously opened TIFF file, which could lead to a NULL
pointer dereference. An attacker could possibly use this issue to cause a
denial of service. (CVE-2023-3316)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS (Available with Ubuntu Pro):
libtiff-tools 4.0.9-5ubuntu0.10+esm1
libtiff5 4.0.9-5ubuntu0.10+esm1
Ubuntu 16.04 LTS (Available with Ubuntu Pro):
libtiff-tools 4.0.6-1ubuntu0.8+esm11
libtiff5 4.0.6-1ubuntu0.8+esm11
Ubuntu 14.04 LTS (Available with Ubuntu Pro):
libtiff-tools 4.0.3-7ubuntu0.11+esm8
libtiff5 4.0.3-7ubuntu0.11+esm8
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6229-1
CVE-2023-25433, CVE-2023-26965, CVE-2023-26966, CVE-2023-3316
