Headline
Ubuntu Security Notice USN-5570-1
Ubuntu Security Notice 5570-1 - Evgeny Legerov discovered that zlib incorrectly handled memory when performing certain inflate operations. An attacker could use this issue to cause zlib to crash, resulting in a denial of service, or possibly execute arbitrary code.
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Ubuntu Security Notice USN-5570-1
August 17, 2022
zlib vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM
Summary:
zlib could be made to crash or run programs if it received specially
crafted input.
Software Description:
- zlib: Lossless data-compression library
Details:
Evgeny Legerov discovered that zlib incorrectly handled memory when
performing certain inflate operations. An attacker could use this issue
to cause zlib 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 18.04 LTS:
lib32z1 1:1.2.11.dfsg-0ubuntu2.2
lib64z1 1:1.2.11.dfsg-0ubuntu2.2
libx32z1 1:1.2.11.dfsg-0ubuntu2.2
zlib1g 1:1.2.11.dfsg-0ubuntu2.2
Ubuntu 16.04 ESM:
lib32z1 1:1.2.8.dfsg-2ubuntu4.3+esm2
lib64z1 1:1.2.8.dfsg-2ubuntu4.3+esm2
libx32z1 1:1.2.8.dfsg-2ubuntu4.3+esm2
zlib1g 1:1.2.8.dfsg-2ubuntu4.3+esm2
Ubuntu 14.04 ESM:
lib32z1 1:1.2.8.dfsg-1ubuntu1.1+esm2
lib64z1 1:1.2.8.dfsg-1ubuntu1.1+esm2
libx32z1 1:1.2.8.dfsg-1ubuntu1.1+esm2
zlib-bin 1:1.2.8.dfsg-1ubuntu1.1+esm2
zlib1g 1:1.2.8.dfsg-1ubuntu1.1+esm2
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5570-1
CVE-2022-37434
Package Information:
https://launchpad.net/ubuntu/+source/zlib/1:1.2.11.dfsg-0ubuntu2.2
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