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LIN1018-5920 : Security Advisory - glibc - CVE-2020-6096

Created: Apr 2, 2020    Updated: Jul 13, 2020
Found In Version:
Severity: Standard
Applicable for: Wind River Linux LTS 18
Component/s: Userspace


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.

CREATE(Triage):(User=admin) [CVE-2020-6096|]
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