[USN-4971-2] libwebp vulnerabilities

========================================================================== Ubuntu Security Notice USN-4971-2 June 10, 2021
libwebp vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 16.04 ESM – Ubuntu 14.04 ESM
Summary:
libwebp could be made to crash or run programs as your login if it opened a specially crafted file.
Software Description: – libwebp: Lossy compression of digital photographic images.
Details:
USN-4971-1 fixed several vulnerabilities in libwebp. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.
Original advisory details:
It was discovered that libwebp incorrectly handled certain malformed images. If a user or automated system were tricked into opening a specially crafted image file, a remote attacker could use this issue to cause libwebp to crash, resulting in a denial of service, or possibly execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04 ESM: libwebp5 0.4.4-1ubuntu0.1~esm1 libwebpdemux1 0.4.4-1ubuntu0.1~esm1 libwebpmux1 0.4.4-1ubuntu0.1~esm1
Ubuntu 14.04 ESM: libwebp5 0.4.0-4ubuntu0.1~esm1 libwebpdemux1 0.4.0-4ubuntu0.1~esm1 libwebpmux1 0.4.0-4ubuntu0.1~esm1
In general, a standard system update will make all the necessary changes.
References: ubuntu.com/security/notices/USN-4971-2 ubuntu.com/security/notices/USN-4971-1 CVE-2018-25009, CVE-2018-25010, CVE-2018-25011, CVE-2018-25012, CVE-2018-25013, CVE-2018-25014, CVE-2020-36328, CVE-2020-36329, CVE-2020-36330, CVE-2020-36331