CVE-2021-41043: Use After Free
First published: Wed Jan 05 2022(Updated: )
Tcpdump tcpslice is vulnerable to a denial of service, caused by a use-after-free flaw. By persuading a victim to open a specially-crafted file, a remote attacker could exploit this vulnerability to cause a segmentation fault, and results in a denial of service condition.
Credit: security@tcpdump.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/tcpslice | <1.5 | 1.5 |
| IBM Security Verify Governance - Identity Manager | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager | <=ISVG 10.0.2 | |
| Tcpdump | <1.5 |
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Reference Links
- https://github.com/the-tcpdump-group/tcpslice/issues/11
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2040393
- https://access.redhat.com/errata/RHSA-2024:0410
- https://access.redhat.com/errata/RHSA-2024:0571
- https://access.redhat.com/errata/RHSA-2024:0769
- https://access.redhat.com/errata/RHSA-2024:1090
- https://access.redhat.com/errata/RHSA-2024:2211
- https://bugzilla.redhat.com/show_bug.cgi?id=2040392
- https://www.ibm.com/support/pages/node/7172423 (Advisory)
Frequently Asked Questions
What is CVE-2021-41043?
CVE-2021-41043 is a vulnerability that occurs due to a use-after-free issue in tcpslice.
What triggers the AddressSanitizer in CVE-2021-41043?
The use-after-free issue in tcpslice triggers the AddressSanitizer.
Is there any other confirmed impact of CVE-2021-41043?
No, there are no other confirmed impacts of this vulnerability.
What is the severity of CVE-2021-41043?
CVE-2021-41043 has a severity rating of medium (5.5).
How can I fix CVE-2021-41043?
To fix CVE-2021-41043, it is recommended to update tcpslice to a version above 1.5 or apply any patches or fixes provided by the vendor.
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