CVE-2023-38802
Description
FRRouting FRR 7.5.1 through 9.0 and Pica8 PICOS 4.3.3.2 allow a remote attacker to cause a denial of service via a crafted BGP update with a corrupted attribute 23 (Tunnel Encapsulation).
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Mitigation details
CVE-2023-38802 NameCVE-2023-38802 DescriptionFRRouting FRR 7.5.1 through 9.0 and Pica8 PICOS 4.3.3.2 allow a remote attacker to cause a denial of service via a crafted BGP update with a corrupted attribute 23 (Tunnel Encapsulation). SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)…
CVE-2023-38802
| Name | CVE-2023-38802 |
| Description | FRRouting FRR 7.5.1 through 9.0 and Pica8 PICOS 4.3.3.2 allow a remote attacker to cause a denial of service via a crafted BGP update with a corrupted attribute 23 (Tunnel Encapsulation). |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3573-1, DSA-5495-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| frr (PTS) | bullseye | 7.5.1-1.1+deb11u2 | fixed |
| bullseye (security) | 7.5.1-1.1+deb11u4 | fixed | |
| bookworm, bookworm (security) | 8.4.4-1.1~deb12u1 | fixed | |
| trixie | 10.3-3 | fixed | |
| forky | 10.6.1-1 | fixed | |
| sid | 10.6.1-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| frr | source | buster | 7.5.1-1.1+deb10u1 | DLA-3573-1 | ||
| frr | source | bullseye | 7.5.1-1.1+deb11u2 | DSA-5495-1 | ||
| frr | source | bookworm | 8.4.4-1.1~deb12u1 | DSA-5495-1 | ||
| frr | source | (unstable) | 8.4.4-1.1 |
Notes
https://blog.benjojo.co.uk/post/bgp-path-attributes-grave-error-handling
https://github.com/FRRouting/frr/pull/14290
https://github.com/FRRouting/frr/commit/bcb6b58d9530173df41d3a3cbc4c600ee0b4b186
Backport for stable/8.4: https://github.com/FRRouting/frr/pull/14295
https://github.com/FRRouting/frr/commit/46817adab03802355c3cce7b753c7a735bdcc5ae
Apply commands
https://blog.benjojo.co.uk/post/bgp-path-attributes-grave-error-handlinghttps://github.com/FRRouting/frr/pull/14290https://github.com/FRRouting/frr/commit/bcb6b58d9530173df41d3a3cbc4c600ee0b4b186Backport for stable/8.4: https://github.com/FRRouting/frr/pull/14295https://github.com/FRRouting/frr/commit/46817adab03802355c3cce7b753c7a735bdcc5aeOS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 8.4.4-1.1 |
| sid | Fixed | 8.4.4-1.1 |
| forky | Fixed | 8.4.4-1.1 |
| bullseye | Fixed | 7.5.1-1.1+deb11u2 |
| bookworm | Fixed | 8.4.4-1.1~deb12u1 |
Red Hat Fixed 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | — |
| 8 | Fixed | — |
References
- https://access.redhat.com/errata/RHSA-2023:5194
- https://security-tracker.debian.org/tracker/CVE-2023-38802
- https://www.suse.com/security/cve/CVE-2023-38802.html
- https://access.redhat.com/errata/RHSA-2023:5219
- https://bugzilla.redhat.com/2230983
- https://errata.almalinux.org/8/ALSA-2023-5219.html
- https://errata.almalinux.org/9/ALSA-2023-5194.html
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.