Heap/Stack Buffer Overflow in libiberty Affects GCC
CVE-2021-3826

7.5HIGH

Key Information:

Vendor
Gnu
Status
Gcc
Vendor
CVE Published:
1 September 2022

Summary

A heap/stack buffer overflow vulnerability exists in the dlang_lname function in the libiberty library used by GCC. Exploiting this vulnerability allows attackers to execute a crafted mangled symbol, potentially leading to denial of service conditions such as segmentation faults and application crashes. Proper input validation and sanitization measures are essential to mitigate the risks associated with this vulnerability.

Affected Version(s)

gcc gcc 11.2.0

References

https://gcc.gnu.org/pipermail/gcc-patches/2021-September/...
https://gcc.gnu.org/git/?p=gcc.git%3Ba=commit%3Bh=5481040...
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisory

CVSS V3.1

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.