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Ubuntu Security Notice USN-4971-2

Ubuntu Security Notice USN-4971-2
Posted Jun 10, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4971-2 - USN-4971-1 fixed several vulnerabilities in libwebp. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. 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. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary, vulnerability
systems | linux, ubuntu
advisories | CVE-2018-25009, CVE-2018-25013, CVE-2020-36330
SHA-256 | f63aaf0ab9c4c2c6d9380becd06ab7d255d0d5feb334a87f9ac6044ffe487df2

Ubuntu Security Notice USN-4971-2

Change Mirror Download
=========================================================================
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:
https://ubuntu.com/security/notices/USN-4971-2
https://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
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