| Name | CVE-2018-9860 |
| Description | An issue was discovered in Botan 1.11.32 through 2.x before 2.6.0. An off-by-one error when processing malformed TLS-CBC ciphertext could cause the receiving side to include in the HMAC computation exactly 64K bytes of data following the record buffer, aka an over-read. The MAC comparison will subsequently fail and the connection will be closed. This could be used for denial of service. No information leak occurs. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| botan (PTS) | buster | 2.9.0-2 | fixed |
| bullseye | 2.17.3+dfsg-2 | fixed |
| bookworm | 2.19.3+dfsg-1 | fixed |
| sid, trixie | 2.19.5+dfsg-3 | fixed |
| botan1.10 (PTS) | jessie, jessie (lts) | 1.10.8-2+deb8u2 | fixed |
| stretch (security), stretch (lts), stretch | 1.10.17-1+deb9u1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| botan | source | (unstable) | 2.4.0-6 | | | |
| botan1.10 | source | (unstable) | (not affected) | | | |
Notes
- botan1.10 <not-affected> (Issue introduced in 1.11.32)
https://github.com/randombit/botan/commit/ec222c99719c396a1f4756b2ca345dbbfbeb5ed5
Bug introduced in 1.11.32, fixed in 2.6.0