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AUSCERT External Security Bulletin Redistribution
ESB-2021.2102
USN-4971-2: libwebp vulnerabilities
11 June 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: libwebp
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-36331 CVE-2020-36330 CVE-2020-36329
CVE-2020-36328 CVE-2018-25014 CVE-2018-25013
CVE-2018-25012 CVE-2018-25011 CVE-2018-25010
CVE-2018-25009
Reference: ESB-2021.2070
ESB-2021.2039
Original Bulletin:
https://ubuntu.com/security/notices/USN-4971-2
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USN-4971-2: libwebp vulnerabilities
10 June 2021
libwebp could be made to crash or run programs as your login if it
opened a specially crafted file.
Releases
o Ubuntu 16.04 ESM
o Ubuntu 14.04 ESM
Packages
o 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
o libwebp5 - 0.4.4-1ubuntu0.1~esm1
Available with UA Infra or UA Desktop
o libwebpdemux1 - 0.4.4-1ubuntu0.1~esm1
Available with UA Infra or UA Desktop
o libwebpmux1 - 0.4.4-1ubuntu0.1~esm1
Available with UA Infra or UA Desktop
Ubuntu 14.04
o libwebp5 - 0.4.0-4ubuntu0.1~esm1
Available with UA Infra or UA Desktop
o libwebpdemux1 - 0.4.0-4ubuntu0.1~esm1
Available with UA Infra or UA Desktop
o libwebpmux1 - 0.4.0-4ubuntu0.1~esm1
Available with UA Infra or UA Desktop
In general, a standard system update will make all the necessary changes.
References
o CVE-2020-36331
o CVE-2018-25014
o CVE-2020-36328
o CVE-2018-25012
o CVE-2018-25009
o CVE-2018-25013
o CVE-2018-25011
o CVE-2018-25010
o CVE-2020-36330
o CVE-2020-36329
Related notices
o USN-4971-1 : webp, libwebpdemux2, libwebp-dev, libwebp6, libwebp,
libwebpmux3
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