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Ubuntu Security Notice USN-6322-1
August 30, 2023

elfutils vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
- Ubuntu 14.04 LTS (Available with Ubuntu Pro)

Summary:

Several security issues were fixed in elfutils.

Software Description:
- elfutils: collection of utilities to handle ELF objects

Details:

It was discovered that elfutils incorrectly handled certain malformed
files. If a user or automated system were tricked into processing a
specially crafted file, elfutils could be made to crash or consume
resources, resulting in a denial of service. This issue only affected
Ubuntu 14.04 LTS. (CVE-2018-16062, CVE-2018-16403, CVE-2018-18310,
CVE-2018-18520, CVE-2018-18521, CVE-2019-7149, CVE-2019-7150,
CVE-2019-7665)

It was discovered that elfutils incorrectly handled bounds checks in
certain functions when processing malformed files. If a user or automated
system were tricked into processing a specially crafted file, elfutils
could be made to crash or consume resources, resulting in a denial of
service. (CVE-2020-21047, CVE-2021-33294)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS:
elfutils 0.176-1.1ubuntu0.1
libasm1 0.176-1.1ubuntu0.1
libdw1 0.176-1.1ubuntu0.1
libelf1 0.176-1.1ubuntu0.1

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
elfutils 0.170-0.4ubuntu0.1+esm1
libasm1 0.170-0.4ubuntu0.1+esm1
libdw1 0.170-0.4ubuntu0.1+esm1
libelf1 0.170-0.4ubuntu0.1+esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
elfutils 0.165-3ubuntu1.2+esm1
libasm1 0.165-3ubuntu1.2+esm1
libdw1 0.165-3ubuntu1.2+esm1
libelf1 0.165-3ubuntu1.2+esm1

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
elfutils 0.158-0ubuntu5.3+esm1
libasm1 0.158-0ubuntu5.3+esm1
libdw1 0.158-0ubuntu5.3+esm1
libelf1 0.158-0ubuntu5.3+esm1

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-6322-1
CVE-2018-16062, CVE-2018-16403, CVE-2018-18310, CVE-2018-18520,
CVE-2018-18521, CVE-2019-7149, CVE-2019-7150, CVE-2019-7665,
CVE-2020-21047, CVE-2021-33294

Package Information:
https://launchpad.net/ubuntu/+source/elfutils/0.176-1.1ubuntu0.1