CVE-2020-6096

Description

An exploitable signed comparison vulnerability exists in the ARMv7 memcpy() implementation of GNU glibc 2.30.9000. Calling memcpy() (on ARMv7 targets that utilize the GNU glibc implementation) with a negative value for the num parameter results in a signed comparison vulnerability. If an attacker underflows the num parameter to memcpy(), this vulnerability could lead to undefined behavior such as writing to out-of-bounds memory and potentially remote code execution. Furthermore, this memcpy() implementation allows for program execution to continue in scenarios where a segmentation fault or crash should have occurred. The dangers occur in that subsequent execution and iterations of this code will be executed with this corrupted data.

Risk Information

Base Score

8.1

MODERATE

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score

Exploitation Probability

1.904

Associated Vulnerability

Vulnerability	OS Platform
GNU C Library (USN-5310-1) libc6_2.27-3ubuntu1.5_i386.deb	Linux
GNU C Library (USN-5310-1) libc6_2.27-3ubuntu1.5_amd64.deb	Linux
GNU C Library (USN-5310-1) libc6_2.31-0ubuntu9.9_i386.deb	Linux
GNU C Library (USN-5310-1) libc6_2.31-0ubuntu9.7_amd64.deb	Linux
GNU C Library (USN-5310-1) libc6_2.34-0ubuntu3.2_i386.deb	Linux
GNU C Library (USN-5310-1) libc6_2.34-0ubuntu3.2_amd64.deb	Linux
GNU C Library (USN-4954-1) libc6_2.23-0ubuntu11.3_i386.deb	Linux
GNU C Library (USN-4954-1) libc6_2.23-0ubuntu11.3_amd64.deb	Linux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234