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Ubuntu 20.04 LTS USN-6322-1 Critical: Elfutils Denial of Service

ubuntu
Calendar Grey August 30, 2023
Dist Ubuntu Esm H88
Recent vulnerabilities in Ubuntu's LTS elfutils could lead to unauthorized resource access; users should promptly update their systems for enhanced security
Several security issues were fixed in elfutils.

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)

Topics%20covered

Topics Covered

security advisory critical DoS Ubuntu update instructions elfutils resource consumption

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

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6322-1

Topics%20covered

Topics Covered

security advisory critical DoS Ubuntu update instructions elfutils resource consumption

Package Information

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

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