========================================================================== Ubuntu Security Notice USN-5523-2 September 12, 2022
tiff vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS Summary: Several security issues were fixed in LibTIFF. Software Description: - tiff: Tag Image File Format (TIFF) library Details: USN-5523-1 fixed several vulnerabilities in LibTIFF. This update provides the fixes for CVE-2022-0907, CVE-2022-0908, CVE-2022-0909, CVE-2022-0924 and CVE-2022-22844 for Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. Original advisory details: It was discovered that LibTIFF was not properly perf orming checks to guarantee that allocated memory space existed, which could lead to a NULL pointer dereference via a specially crafted file. An attacker could possibly use this issue to cause a denial of service. (CVE-2022-0907, CVE-2022-0908) It was discovered that LibTIFF was not properly performing checks to avoid division calculations where the denominator value was zero, which could lead to an undefined behavior situation via a specially crafted file. An attacker could possibly use this issue to cause a denial of service. (CVE-2022-0909) It was discovered that LibTIFF was not properly performing bounds checks, which could lead to an out-of-bounds read via a specially crafted file. An attacker could possibly use this issue to cause a denial of service or to expose sensitive information. (CVE-2022-0924) It was discovered that LibTIFF was not properly performing the calculation of data that would eventually be used as a reference for bounds checking operations, which could lead to an out-of-bounds read via a specially crafted file. An attacker could possibly use this issue to cause a denial of service or to expose sensitive information. (CVE-2020-19131) It was discovered that LibTIFF was not properly terminating a function execution when processing incorrect data, which could lead to an out-of-bounds read via a specially crafted file. An attacker could possibly use this issue to cause a denial of service or to expose sensitive information. (CVE-2020-19144) It was discovered that LibTIFF was not properly performing checks when setting the value for data later used as reference during memory access, which could lead to an out-of-bounds read via a specially crafted file. An attacker could possibly use this issue to cause a denial of service or to expose sensitive information. (CVE-2022-22844) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: libtiff-opengl 4.1.0+git191117-2ubuntu0.20.04.4 libtiff-tools 4.1.0+git191117-2ubuntu0.20.04.4 libtiff5 4.1.0+git191117-2ubuntu0.20.04.4 libtiffxx5 4.1.0+git191117-2ubuntu0.20.04.4 Ubuntu 18.04 LTS: libtiff-opengl 4.0.9-5ubuntu0.6 libtiff-tools 4.0.9-5ubuntu0.6 libtiff5 4.0.9-5ubuntu0.6 libtiffxx5 4.0.9-5ubuntu0.6 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5523-2 https://ubuntu.com/security/notices/USN-5523-1 CVE-2022-0907, CVE-2022-0908, CVE-2022-0909, CVE-2022-0924, CVE-2022-22844 Package Information: https://launchpad.net/ubuntu/+source/tiff/4.1.0+git191117-2ubuntu0.20.04.4 https://launchpad.net/ubuntu/+source/tiff/4.0.9-5ubuntu0.6
OpenPGP_0x196D412138F33F64.asc
Description: OpenPGP public key
OpenPGP_signature
Description: OpenPGP digital signature
