| Name | CVE-2017-11103 |
| Description | Heimdal before 7.4 allows remote attackers to impersonate services with Orpheus' Lyre attacks because it obtains service-principal names in a way that violates the Kerberos 5 protocol specification. In _krb5_extract_ticket() the KDC-REP service name must be obtained from the encrypted version stored in 'enc_part' instead of the unencrypted version stored in 'ticket'. Use of the unencrypted version provides an opportunity for successful server impersonation and other attacks. NOTE: this CVE is only for Heimdal and other products that embed Heimdal code; it does not apply to other instances in which this part of the Kerberos 5 protocol specification is violated. |
| 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-1027-1, DSA-3909-1, DSA-3912-1 |
| Debian Bugs | 868208, 868209 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| heimdal (PTS) | jessie, jessie (lts) | 1.6~rc2+dfsg-9+deb8u3 | fixed |
| stretch (security) | 7.1.0+dfsg-13+deb9u3 | fixed | |
| stretch (lts), stretch | 7.1.0+dfsg-13+deb9u4 | fixed | |
| buster (security), buster, buster (lts) | 7.5.0+dfsg-3+deb10u2 | fixed | |
| bullseye (security), bullseye | 7.7.0+dfsg-2+deb11u3 | fixed | |
| bookworm | 7.8.git20221117.28daf24+dfsg-2 | fixed | |
| sid, trixie | 7.8.git20221117.28daf24+dfsg-8 | fixed | |
| samba (PTS) | jessie, jessie (lts) | 2:4.2.14+dfsg-0+deb8u16 | fixed |
| stretch (security) | 2:4.5.16+dfsg-1+deb9u4 | fixed | |
| stretch (lts), stretch | 2:4.5.16+dfsg-1+deb9u5 | fixed | |
| buster (security), buster, buster (lts) | 2:4.9.5+dfsg-5+deb10u5 | fixed | |
| bullseye (security), bullseye | 2:4.13.13+dfsg-1~deb11u6 | fixed | |
| bookworm (security), bookworm | 2:4.17.12+dfsg-0+deb12u1 | fixed | |
| sid, trixie | 2:4.21.1+dfsg-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| heimdal | source | wheezy | 1.6~git20120403+dfsg1-2+deb7u1 | DLA-1027-1 | ||
| heimdal | source | jessie | 1.6~rc2+dfsg-9+deb8u1 | DSA-3912-1 | ||
| heimdal | source | stretch | 7.1.0+dfsg-13+deb9u1 | DSA-3912-1 | ||
| heimdal | source | (unstable) | 7.4.0.dfsg.1-1 | 868208 | ||
| samba | source | wheezy | (not affected) | |||
| samba | source | jessie | 2:4.2.14+dfsg-0+deb8u7 | DSA-3909-1 | ||
| samba | source | stretch | 2:4.5.8+dfsg-2+deb9u1 | DSA-3909-1 | ||
| samba | source | (unstable) | 2:4.6.5+dfsg-4 | 868209 | ||
| samba4 | source | wheezy | (not affected) | |||
| samba4 | source | (unstable) | (unfixed) |
[wheezy] - samba <not-affected> (Heimdal is only used in 4.x, wheezy ships 3.6.6)
[wheezy] - samba4 <not-affected> (dynamically linked against system heimdal)
https://orpheus-lyre.info/
https://github.com/heimdal/heimdal/commit/6dd3eb836bbb80a00ffced4ad57077a1cdf227ea
samba's source package embeds heimdal but the binary is statically linked to src:heimdal
https://www.samba.org/samba/security/CVE-2017-11103.html
Upstream Samba Bug: https://bugzilla.samba.org/show_bug.cgi?id=12894