Integer Underflow The advisory has been revoked - it doesn't affect any version of package glibc Open this link in a new tab
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Test your applications- Snyk ID SNYK-UBUNTU1910-GLIBC-576613
- published 2 Apr 2020
- disclosed 1 Apr 2020
Introduced: 1 Apr 2020
CVE-2020-6096 Open this link in a new tabAmendment
The Ubuntu
security team deemed this advisory irrelevant for Ubuntu:19.10
.
NVD Description
Note: Versions mentioned in the description apply only to the upstream glibc
package and not the glibc
package as distributed by Ubuntu
.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2020-6096
- https://security-tracker.debian.org/tracker/CVE-2020-6096
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SPYXTDOOB4PQGTYAMZAZNJIB3FF6YQXI/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/URXOIA2LDUKHQXK4BE55BQBRI6ZZG3Y6/
- https://security.gentoo.org/glsa/202101-20
- https://sourceware.org/bugzilla/show_bug.cgi?id=25620
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1019
- https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
- https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPYXTDOOB4PQGTYAMZAZNJIB3FF6YQXI/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/URXOIA2LDUKHQXK4BE55BQBRI6ZZG3Y6/