Vulnerability in Samba
CVE-2015-7540
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.071 (94.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.071 · newest: 0.071 · change: 0.000
Affected products
- Samba
- Canonical Ubuntu Linux — versions 12.04, 14.04, 15.04
- Debian Linux — versions 7.0, 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- git.samba.org/
- lists.fedoraproject.org/pipermail/package-announce/2015-December/174391.html (vendor-advisory, Third Party Advisory)
- www.ubuntu.com/usn/USN-2855-2 (vendor-advisory, Third Party Advisory)
- www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html (Third Party Advisory)
- git.samba.org/
- www.securitytracker.com/id/1034492 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securityfocus.com/bid/79736 (VDB Entry, Third Party Advisory, vdb-entry)
- www.samba.org/samba/security/CVE-2015-7540.html (Vendor Advisory)
- lists.fedoraproject.org/pipermail/package-announce/2015-December/174076.html (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2016/dsa-3433 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2015-7540?
- CVE-2015-7540 is a high-severity vulnerability in Samba, classified under CWE-399. CVSS score: 7.5/10. Published 2015-12-29.
- How severe is CVE-2015-7540?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2015-7540 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.