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Ubuntu 18.04 LTS USN-6233-1: Critical YAJL Denial of Service Issues

ubuntu
Calendar Grey July 18, 2023
Dist Ubuntu Esm H88
Numerous vulnerabilities addressed in YAJL impact Ubuntu users. Make sure to update your systems for enhanced security.
Several security issues were fixed in YAJL.

Summary

Several security issues were fixed in YAJL.

Software Description:

- yajl: Yet Another JSON Library

Details:

It was discovered that YAJL was not properly performing bounds checks when

decoding a string with escape sequences. If a user or automated system

using YAJL were tricked into processing specially crafted input, an

attacker could possibly use this issue to cause a denial of service

(application abort). (CVE-2017-16516)

It was discovered that YAJL was not properly handling memory allocation

when dealing with large inputs, which could lead to heap memory

corruption. If a user or automated system using YAJL were tricked into

running a specially crafted large input, an attacker could possibly use

this issue to cause a denial of service. (CVE-2022-24795)

It was discovered that memory leaks existed in one of the YAJL parsing

functions. An attacker could possibly use this issue to cause a denial of

service (memory exhaustion). (CVE-2023-33460)

Topics%20covered

Topics Covered

security advisory denial of service update memory corruption ubuntu application issue yajl

Update Instructions

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

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   libyajl2                        2.1.0-2ubuntu0.18.04.1~esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   libyajl2                        2.1.0-2ubuntu0.16.04.1~esm1

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
   libyajl2                        2.0.4-4ubuntu0.1~esm1

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

References

  https://ubuntu.com/security/notices/USN-6233-1

  CVE-2017-16516, CVE-2022-24795, CVE-2023-33460

Severity
critical
Lowest
Low
Medium
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Critical

July 18, 2023

Topics%20covered

Topics Covered

security advisory denial of service update memory corruption ubuntu application issue yajl

Package Information

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