Infinite Loop Vulnerability in GNU C Library Affects glibc by Sourceware
CVE-2020-27618

5.5MEDIUM

Key Information:

Vendor
Gnu
Status
Glibc
Vendor
CVE Published:
26 February 2021

Summary

The iconv function in the GNU C Library (glibc) versions 2.32 and earlier is susceptible to an infinite loop when it processes invalid multi-byte input sequences in certain encodings (IBM1364, IBM1371, IBM1388, IBM1390, IBM1399). This flaw prevents the input state from advancing correctly, potentially leading to a denial of service in applications utilizing this library. Proper sanitization of input and adherence to encoding standards is crucial in mitigating this issue.

References

https://sourceware.org/bugzilla/show_bug.cgi?id=26224
https://sourceware.org/bugzilla/show_bug.cgi?id=19519#c21
https://security.gentoo.org/glsa/202107-07
vendor-advisory

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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