PT-2020-3258 · Gnu+4 · Glibc+4
Published
2020-04-01
·
Updated
2024-06-15
·
CVE-2020-6096
CVSS v3.1
8.1
High
| Vector | AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
GNU glibc version 2.30.9000
Description
An exploitable signed comparison vulnerability exists in the ARMv7 memcpy() implementation. Calling
memcpy() with a negative value for the num parameter results in a signed comparison vulnerability, potentially leading to undefined behavior such as writing to out-of-bounds memory and remote code execution. The vulnerability allows program execution to continue in scenarios where a segmentation fault or crash should have occurred, resulting in subsequent execution with corrupted data.Recommendations
For GNU glibc version 2.30.9000, consider disabling the
memcpy() function until a patch is available to prevent potential remote code execution. Restrict access to the vulnerable memcpy() implementation to minimize the risk of exploitation. Avoid using the num parameter with negative values in the affected memcpy() function until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.RCE
Integer Underflow
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Related Identifiers
Affected Products
Alt Linux
Astra Linux
Linuxmint
Ubuntu
Glibc