| Name | CVE-2023-51847 |
| Description | An issue in obgm and Libcoap v.a3ed466 allows a remote attacker to cause a denial of service via thecoap_context_t function in the src/coap_threadsafe.c:297:3 component. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1084981 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libcoap (PTS) | buster, stretch | 4.1.2-1 | vulnerable |
| libcoap2 (PTS) | buster | 4.2.0-2 | vulnerable |
| bullseye | 4.2.1-1 | vulnerable |
| libcoap3 (PTS) | bookworm | 4.3.1-1 | vulnerable |
| sid, trixie | 4.3.4-1.1 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| libcoap | source | stretch | (unfixed) | end-of-life | | |
| libcoap | source | buster | (unfixed) | end-of-life | | |
| libcoap | source | (unstable) | (unfixed) | | | |
| libcoap2 | source | buster | (unfixed) | end-of-life | | |
| libcoap2 | source | (unstable) | (unfixed) | | | |
| libcoap3 | source | (unstable) | (unfixed) | | | 1084981 |
Notes
[bookworm] - libcoap3 <ignored> (Minor issue, no reverse deps in Bookworm)
[bullseye] - libcoap2 <postponed> (Minor issue; can be fixed in next update)
https://github.com/obgm/libcoap/issues/1302
https://github.com/obgm/libcoap/pull/1303
https://github.com/obgm/libcoap/commit/e7105286f6cac3afdbf03c307ecb480d9a7d511c (v4.3.5-rc1)