CVE-2015-0240
CVE-2015-0240 is a critical-severity vulnerability in Redhat Enterprise Linux with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 88% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-17.
Key facts
- Severity: Critical (CVSS 2.0 base score 10.0)
- EPSS exploit prediction: 88% (100th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-17
- Affected product: Redhat Enterprise Linux
- Published:
- Last modified:
Description
The Netlogon server implementation in smbd in Samba 3.5.x and 3.6.x before 3.6.25, 4.0.x before 4.0.25, 4.1.x before 4.1.17, and 4.2.x before 4.2.0rc5 performs a free operation on an uninitialized stack pointer, which allows remote attackers to execute arbitrary code via crafted Netlogon packets that use the ServerPasswordSet RPC API, as demonstrated by packets reaching the _netr_ServerPasswordSet function in rpc_server/netlogon/srv_netlog_nt.c.
Frequently asked questions
- What is CVE-2015-0240?
- The Netlogon server implementation in smbd in Samba 3.5.x and 3.6.x before 3.6.25, 4.0.x before 4.0.25, 4.1.x before 4.1.17, and 4.2.x before 4.2.0rc5 performs a free operation on an uninitialized stack pointer, which allows remote attackers to execute arbitrary code via crafted Netlogon packets that use the ServerPasswordSet RPC API, as demonstrated by packets reaching the _netr_ServerPasswordSet function in rpc_server/netlogon/srv_netlog_nt.c.
- How severe is CVE-2015-0240?
- CVE-2015-0240 has a CVSS 2.0 base score of 10.0, rated critical severity.
- Is CVE-2015-0240 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 88% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2015-0240?
- CVE-2015-0240 primarily affects Redhat Enterprise Linux. In total, 96 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2015-0240?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2015-0240 published?
- CVE-2015-0240 was published on 2015-02-24 and last updated on 2026-06-17.
References
- http://advisories.mageia.org/MGASA-2015-0084.html
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00028.html
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00030.html
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00031.html
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00035.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html
- http://marc.info/?l=bugtraq&m=142722696102151&w=2
- http://marc.info/?l=bugtraq&m=143039217203031&w=2
- http://rhn.redhat.com/errata/RHSA-2015-0249.html
- http://rhn.redhat.com/errata/RHSA-2015-0250.html
- http://rhn.redhat.com/errata/RHSA-2015-0251.html
- http://rhn.redhat.com/errata/RHSA-2015-0252.html
- http://rhn.redhat.com/errata/RHSA-2015-0253.html
- http://rhn.redhat.com/errata/RHSA-2015-0254.html
- http://rhn.redhat.com/errata/RHSA-2015-0255.html
- http://rhn.redhat.com/errata/RHSA-2015-0256.html
- http://rhn.redhat.com/errata/RHSA-2015-0257.html
- http://security.gentoo.org/glsa/glsa-201502-15.xml
- http://www.debian.org/security/2015/dsa-3171
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:081
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:082
- http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
- http://www.securityfocus.com/bid/72711
- http://www.securitytracker.com/id/1031783
- http://www.slackware.com/security/viewer.php?l=slackware-security&y=2015&m=slackware-security.360345
- http://www.ubuntu.com/usn/USN-2508-1
- https://access.redhat.com/articles/1346913
- https://bugzilla.redhat.com/show_bug.cgi?id=1191325
Affected products (96)
- cpe:2.3:o:redhat:enterprise_linux:5:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.0:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.1:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.2:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.3:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.4:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.5:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.6:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.7:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.8:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.9:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.10:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.11:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.12:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.13:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.14:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.15:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.16:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.17:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.18:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.19:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.20:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.21:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.5.22:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.6.0:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.6.1:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.6.2:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.6.10:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.6.11:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.6.12:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.6.13:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.6.14:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.6.15:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.6.16:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.6.17:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.6.18:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.6.19:*:*:*:*:*:*:*
- cpe:2.3:a:samba:samba:3.6.20:*:*:*:*:*:*:*
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