CVE-2021-21829 Memory corruption in AT&T
A heap-based buffer overflow in Xmill allows remote code execution via a specially crafted XMI file.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-21829?
CVE-2021-21829 is a high-severity memory corruption vulnerability in AT&T, published on 13 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A heap-based buffer overflow vulnerability exists in the XML Decompression EnumerationUncompressor::UncompressItem functionality of AT&T Labs’ Xmill 0.7. A specially crafted XMI file can lead to remote code execution. An attacker can provide a malicious file to trigger this vulnerability.
Which versions are affected by CVE-2021-21829?
It affects 1 product.
Products include Att Xmill.
How do I fix CVE-2021-21829?
No fix has been published for CVE-2021-21829 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-21829 being exploited?
There is no known exploitation of CVE-2021-21829 in the wild and no public exploit code.
Other vulnerabilities in AT&T
Sources
Also known as GHSA-whj6-8xvc-hmjm.