Medium severity5.4NVD Advisory· Published Dec 29, 2015· Updated Jun 17, 2026
CVE-2015-5296
CVE-2015-5296
Description
Samba 3.x and 4.x before 4.1.22, 4.2.x before 4.2.7, and 4.3.x before 4.3.3 supports connections that are encrypted but unsigned, which allows man-in-the-middle attackers to conduct encrypted-to-unencrypted downgrade attacks by modifying the client-server data stream, related to clidfs.c, libsmb_server.c, and smbXcli_base.c.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
67cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*range: >=3.2.0,<4.1.22
- (no CPE)range: <4.1.22, <4.2.7, <4.3.3
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*+ 3 more
- cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
- osv-coords59 versionspkg:rpm/opensuse/samba&distro=openSUSE%20Tumbleweedpkg:rpm/suse/ldb&distro=SUSE%20Linux%20Enterprise%20Desktop%2012pkg:rpm/suse/ldb&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP1pkg:rpm/suse/ldb&distro=SUSE%20Linux%20Enterprise%20Server%2012pkg:rpm/suse/ldb&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1pkg:rpm/suse/ldb&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012pkg:rpm/suse/ldb&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/ldb&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012pkg:rpm/suse/ldb&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP1pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Desktop%2011%20SP3pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Desktop%2011%20SP4pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Desktop%2012pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP1pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP2-LTSSpkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-TERADATApkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Server%2012pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP3pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2011%20SP3pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2011%20SP4pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012pkg:rpm/suse/samba&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP1pkg:rpm/suse/samba-doc&distro=SUSE%20Linux%20Enterprise%20Desktop%2011%20SP3pkg:rpm/suse/samba-doc&distro=SUSE%20Linux%20Enterprise%20Desktop%2011%20SP4pkg:rpm/suse/samba-doc&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP2-LTSSpkg:rpm/suse/samba-doc&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3pkg:rpm/suse/samba-doc&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-TERADATApkg:rpm/suse/samba-doc&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/samba-doc&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP3pkg:rpm/suse/samba-doc&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/talloc&distro=SUSE%20Linux%20Enterprise%20Desktop%2012pkg:rpm/suse/talloc&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP1pkg:rpm/suse/talloc&distro=SUSE%20Linux%20Enterprise%20Server%2012pkg:rpm/suse/talloc&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1pkg:rpm/suse/talloc&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012pkg:rpm/suse/talloc&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/talloc&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012pkg:rpm/suse/talloc&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP1pkg:rpm/suse/tdb&distro=SUSE%20Linux%20Enterprise%20Desktop%2012pkg:rpm/suse/tdb&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP1pkg:rpm/suse/tdb&distro=SUSE%20Linux%20Enterprise%20Server%2012pkg:rpm/suse/tdb&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1pkg:rpm/suse/tdb&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012pkg:rpm/suse/tdb&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/tdb&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012pkg:rpm/suse/tdb&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP1pkg:rpm/suse/tevent&distro=SUSE%20Linux%20Enterprise%20Desktop%2012pkg:rpm/suse/tevent&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP1pkg:rpm/suse/tevent&distro=SUSE%20Linux%20Enterprise%20Server%2012pkg:rpm/suse/tevent&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1pkg:rpm/suse/tevent&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012pkg:rpm/suse/tevent&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/tevent&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012pkg:rpm/suse/tevent&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP1
< 4.5.0-1.1+ 58 more
- (no CPE)range: < 4.5.0-1.1
- (no CPE)range: < 1.1.24-4.3.1
- (no CPE)range: < 1.1.24-4.1
- (no CPE)range: < 1.1.24-4.3.1
- (no CPE)range: < 1.1.24-4.1
- (no CPE)range: < 1.1.24-4.3.1
- (no CPE)range: < 1.1.24-4.1
- (no CPE)range: < 1.1.24-4.3.1
- (no CPE)range: < 1.1.24-4.1
- (no CPE)range: < 3.6.3-64.1
- (no CPE)range: < 3.6.3-64.1
- (no CPE)range: < 4.1.12-18.3.1
- (no CPE)range: < 4.2.4-6.1
- (no CPE)range: < 3.6.3-45.2
- (no CPE)range: < 3.6.3-64.1
- (no CPE)range: < 3.6.3-64.1
- (no CPE)range: < 3.6.3-64.1
- (no CPE)range: < 4.1.12-18.3.1
- (no CPE)range: < 4.2.4-6.1
- (no CPE)range: < 3.6.3-64.1
- (no CPE)range: < 3.6.3-64.1
- (no CPE)range: < 4.1.12-18.3.1
- (no CPE)range: < 4.2.4-6.1
- (no CPE)range: < 3.6.3-64.1
- (no CPE)range: < 3.6.3-64.1
- (no CPE)range: < 4.1.12-18.3.1
- (no CPE)range: < 4.2.4-6.1
- (no CPE)range: < 3.6.3-64.1
- (no CPE)range: < 3.6.3-64.1
- (no CPE)range: < 3.6.3-45.2
- (no CPE)range: < 3.6.3-64.1
- (no CPE)range: < 3.6.3-64.1
- (no CPE)range: < 3.6.3-64.1
- (no CPE)range: < 3.6.3-64.1
- (no CPE)range: < 3.6.3-64.1
- (no CPE)range: < 2.1.5-3.4.1
- (no CPE)range: < 2.1.5-4.1
- (no CPE)range: < 2.1.5-3.4.1
- (no CPE)range: < 2.1.5-4.1
- (no CPE)range: < 2.1.5-3.4.1
- (no CPE)range: < 2.1.5-4.1
- (no CPE)range: < 2.1.5-3.4.1
- (no CPE)range: < 2.1.5-4.1
- (no CPE)range: < 1.3.8-2.3.1
- (no CPE)range: < 1.3.8-4.1
- (no CPE)range: < 1.3.8-2.3.1
- (no CPE)range: < 1.3.8-4.1
- (no CPE)range: < 1.3.8-2.3.1
- (no CPE)range: < 1.3.8-4.1
- (no CPE)range: < 1.3.8-2.3.1
- (no CPE)range: < 1.3.8-4.1
- (no CPE)range: < 0.9.26-3.3.1
- (no CPE)range: < 0.9.26-4.1
- (no CPE)range: < 0.9.26-3.3.1
- (no CPE)range: < 0.9.26-4.1
- (no CPE)range: < 0.9.26-3.3.1
- (no CPE)range: < 0.9.26-4.1
- (no CPE)range: < 0.9.26-3.3.1
- (no CPE)range: < 0.9.26-4.1
Patches
Vulnerability mechanics
References
25- lists.fedoraproject.org/pipermail/package-announce/2015-December/174076.htmlnvdMailing ListThird Party Advisory
- lists.fedoraproject.org/pipermail/package-announce/2015-December/174391.htmlnvdMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2015-12/msg00019.htmlnvdMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2015-12/msg00020.htmlnvdMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2015-12/msg00032.htmlnvdMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2015-12/msg00033.htmlnvdMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-01/msg00002.htmlnvdMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-01/msg00017.htmlnvdMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.htmlnvdMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.htmlnvdMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.htmlnvdMailing ListThird Party Advisory
- www.debian.org/security/2016/dsa-3433nvdThird Party Advisory
- www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.htmlnvdThird Party Advisory
- www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.htmlnvdThird Party Advisory
- www.securityfocus.com/bid/79732nvdThird Party AdvisoryVDB Entry
- www.securitytracker.com/id/1034493nvdThird Party AdvisoryVDB Entry
- www.ubuntu.com/usn/USN-2855-1nvdThird Party Advisory
- www.ubuntu.com/usn/USN-2855-2nvdThird Party Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
- h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplaynvdThird Party Advisory
- security.gentoo.org/glsa/201612-47nvdThird Party Advisory
- www.samba.org/samba/security/CVE-2015-5296.htmlnvdVendor Advisory
- git.samba.orgnvd
- git.samba.orgnvd
- git.samba.orgnvd
News mentions
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