| Name | CVE-2016-2181 |
| Description | The Anti-Replay feature in the DTLS implementation in OpenSSL before 1.1.0 mishandles early use of a new epoch number in conjunction with a large sequence number, which allows remote attackers to cause a denial of service (false-positive packet drops) via spoofed DTLS records, related to rec_layer_d1.c and ssl3_record.c. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-637-1, DSA-3673-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| openssl (PTS) | buster | 1.1.1n-0+deb10u3 | fixed |
| buster (security) | 1.1.1n-0+deb10u6 | fixed |
| bullseye | 1.1.1n-0+deb11u4 | fixed |
| bullseye (security) | 1.1.1n-0+deb11u5 | fixed |
| bookworm | 3.0.9-1 | fixed |
| sid, trixie | 3.0.11-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://git.openssl.org/?p=openssl.git;a=commit;h=1fb9fdc3027b27d8eb6a1e6a846435b070980770
https://www.openssl.org/news/secadv/20160922.txt
Fixed in 1.0.2i, 1.0.1u