krb5: SPNEGO context aliasing bugs
Published Nov 9, 2015
5.0
MEDIUMCVSS 2.0
EPSS 6.24%
Description
lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) before 1.14 relies on an inappropriate context handle, which allows remote attackers to cause a denial of service (incorrect pointer read and process crash) via a crafted SPNEGO packet that is mishandled during a gss_inquire_context call.
Affected products
No data.
Configuration 1
- < 1.14
Configuration 3
- 12.04
- 14.04
- 15.04
- 15.10
Configuration 4
- 7.0
- 8.0
- 9.0
Configuration 5
- 42.1
- 13.1
- 13.2
- 11
- 11
- 12
- 11
- 11
- 12
- 11
- 11
- 12
No data.
Red Hat Enterprise Linux 4
krb5
Will not fix
Red Hat Enterprise Linux 5
krb5
Will not fix
Red Hat Enterprise Linux 6
krb5
Will not fix
Red Hat Enterprise Linux 7
krb5
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | krb5 | Will not fix | n/a |
| Red Hat Enterprise Linux 5 | krb5 | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | krb5 | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | krb5 | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.24% (0.06243) | 93.34th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.24% (0.06243) | 92.63th | v5 (v2026.06.15) |
| Feb 24, 2026 | 5.39% (0.05390) | 89.93th | v4 (v2025.03.14) |
| Nov 16, 2025 | 6.45% (0.06447) | 90.65th | v4 (v2025.03.14) |
| Jun 14, 2025 | 4.57% (0.04569) | 88.67th | v4 (v2025.03.14) |
| Mar 30, 2025 | 5.88% (0.05883) | 89.64th | v4 (v2025.03.14) |
| Mar 29, 2025 | 9.23% (0.09226) | 87.74th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.88% (0.05883) | 89.89th | v4 (v2025.03.14) |
| Dec 17, 2024 | 6.62% (0.06620) | 93.72th | v3 (v2023.03.01) |
| Aug 31, 2023 | 9.50% (0.09503) | 93.97th | v3 (v2023.03.01) |
| Jun 26, 2023 | 8.35% (0.08349) | 93.46th | v3 (v2023.03.01) |
| Mar 7, 2023 | 7.86% (0.07857) | 93.16th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
References (16)
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=8244 x_refsource_CONFIRMVendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00006.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00007.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00014.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00022.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://www.debian.org/security/2015/dsa-3395 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html x_refsource_CONFIRMThird Party Advisory
- http://www.securityfocus.com/bid/90687 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1034084 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-2810-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2015-2695 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1275871 Issue Tracking
- https://github.com/krb5/krb5/commit/b51b33f2bc5d1497ddf5bd107f791c101695000d x_refsource_CONFIRMPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2015-2695
- https://security.gentoo.org/glsa/201611-14 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2015-2695
Change history (0)
No recorded changes yet.