CVE-2015-7540
high
CVSS v3
7.5
CVSS v4 NEW
—
VIR risk
7.5
Description
The LDAP server in the AD domain controller in Samba 4.x before 4.1.22 does not check return values to ensure successful ASN.1 memory allocation, which allows remote attackers to cause a denial of service (memory consumption and daemon crash) via crafted packets.
Predictions
Exploit likelihood
83%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| ubuntu | 12.04 | affected | |
| ubuntu | 14.04 | affected | |
| ubuntu | 15.04 | affected | |
| ubuntu | 15.10 | affected | |
| debian | 7.0 | affected | |
| debian | 8.0 | affected | |
| debian | bookworm | fixed | 2:4.1.22+dfsg-1 |
| debian | bullseye | fixed | 2:4.1.22+dfsg-1 |
| debian | forky | fixed | 2:4.1.22+dfsg-1 |
| debian | sid | fixed | 2:4.1.22+dfsg-1 |
| debian | trixie | fixed | 2:4.1.22+dfsg-1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| samba | samba | {"startIncluding":"4.0.0","endExcluding":"4.1.22"} | 4.1.22 |
References
- http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174076.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174391.html
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00033.html
- http://www.debian.org/security/2016/dsa-3433
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- http://www.securityfocus.com/bid/79736
- http://www.securitytracker.com/id/1034492
- http://www.ubuntu.com/usn/USN-2855-1
- http://www.ubuntu.com/usn/USN-2855-2
- https://bugzilla.redhat.com/show_bug.cgi?id=1288451
- https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=530d50a1abdcdf4d1775652d4c456c1274d83d8d
- https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=9d989c9dd7a5b92d0c5d65287935471b83b6e884
- https://security.gentoo.org/glsa/201612-47
- https://www.samba.org/samba/security/CVE-2015-7540.html
- https://security-tracker.debian.org/tracker/CVE-2015-7540
CWEs
CWE-399
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.