[USN-4971-1] libwebp vulnerabilities

========================================================================== Ubuntu Security Notice USN-4971-1 June 01, 2021
libwebp vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 21.04 – Ubuntu 20.10 – Ubuntu 20.04 LTS – Ubuntu 18.04 LTS
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.
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 21.04: libwebp6 0.6.1-2ubuntu0.21.04.1 libwebpdemux2 0.6.1-2ubuntu0.21.04.1 libwebpmux3 0.6.1-2ubuntu0.21.04.1
Ubuntu 20.10: libwebp6 0.6.1-2ubuntu0.20.10.1 libwebpdemux2 0.6.1-2ubuntu0.20.10.1 libwebpmux3 0.6.1-2ubuntu0.20.10.1
Ubuntu 20.04 LTS: libwebp6 0.6.1-2ubuntu0.20.04.1 libwebpdemux2 0.6.1-2ubuntu0.20.04.1 libwebpmux3 0.6.1-2ubuntu0.20.04.1
Ubuntu 18.04 LTS: libwebp6 0.6.1-2ubuntu0.18.04.1 libwebpdemux2 0.6.1-2ubuntu0.18.04.1 libwebpmux3 0.6.1-2ubuntu0.18.04.1
In general, a standard system update will make all the necessary changes.
References: 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, CVE-2020-36332
Package Information: launchpad.net/ubuntu/+source/libwebp/0.6.1-2ubuntu0.21.04.1 launchpad.net/ubuntu/+source/libwebp/0.6.1-2ubuntu0.20.10.1 launchpad.net/ubuntu/+source/libwebp/0.6.1-2ubuntu0.20.04.1 launchpad.net/ubuntu/+source/libwebp/0.6.1-2ubuntu0.18.04.1