QID 355423

Date Published: 2023-06-14

QID 355423: Amazon Linux Security Advisory for byacc : ALAS2023-2023-204

When processing files, malloc stores the data of the current line.
When processing comments, malloc incorrectly accesses the released memory (use after free). (
( CVE-2021-33641) when a file is processed, an infinite loop occurs in next_inline() of the more_curly() function. (
( CVE-2021-33642)

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

CVSS V3 rated as Critical - 9.8 severity.

CVSS V2 rated as Medium - 5.4 severity.

Solution

Please refer to Amazon advisory: ALAS2023-2023-204 for affected packages and patching details, or update with your package manager.

Vendor References

ALAS2023-2023-204 - alas.aws.amazon.com/AL2023/ALAS-2023-204.html

CVEs related to QID 355423

CVE-2021-33642 | CVE-2021-33641 |

Software Advisories

Advisory ID	Software	Component	Link
ALAS2023-2023-204	amazon linux 2023		alas.aws.amazon.com/AL2023/ALAS-2023-204.html

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