Heap-based Buffer Overflow in GNU C Library's Syslog Function
CVE-2022-39046

7.5HIGH

Key Information:

Vendor

Gnu
Status
Glibc
Vendor
CVE Published:
31 August 2022

What is CVE-2022-39046?

An issue exists in the GNU C Library (glibc) version 2.36 where the syslog function can be exploited when provided with a crafted input string exceeding 1024 bytes. This vulnerability allows the function to read uninitialized memory from the heap, which can lead to unintended information disclosure when the contents of this memory are logged. Consequently, sensitive data stored in the heap may be inadvertently exposed through log files, potentially compromising the system's security.

References

https://sourceware.org/bugzilla/show_bug.cgi?id=29536
https://security.netapp.com/advisory/ntap-20221104-0002/
https://security.gentoo.org/glsa/202310-03
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.