krb5: build_principal() memory flaw
Published Nov 9, 2015
4.0
MEDIUMCVSS 2.0
EPSS 4.13%
Description
The build_principal_va function in lib/krb5/krb/bld_princ.c in MIT Kerberos 5 (aka krb5) before 1.14 allows remote authenticated users to cause a denial of service (out-of-bounds read and KDC crash) via an initial '\0' character in a long realm field within a TGS request.
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
- 12
- 12
- 12
No data.
Red Hat Enterprise Linux 4
krb5
Not affected
Red Hat Enterprise Linux 5
krb5
Not affected
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 | Not affected | n/a |
| Red Hat Enterprise Linux 5 | krb5 | Not affected | 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:S/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 2, 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 2, 2026 | 4.13% (0.04128) | 90.51th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.13% (0.04128) | 89.47th | v5 (v2026.06.15) |
| Oct 1, 2025 | 6.39% (0.06393) | 90.68th | v4 (v2025.03.14) |
| Sep 6, 2025 | 4.92% (0.04923) | 89.21th | v4 (v2025.03.14) |
| Mar 17, 2025 | 6.34% (0.06340) | 90.29th | v4 (v2025.03.14) |
| Mar 15, 2025 | 78.72% (0.78721) | 98.56th | v3 (v2023.03.01) |
| Jan 23, 2025 | 77.56% (0.77558) | 98.46th | v3 (v2023.03.01) |
| Dec 17, 2024 | 78.65% (0.78647) | 98.48th | v3 (v2023.03.01) |
| Aug 31, 2023 | 83.54% (0.83539) | 98.01th | v3 (v2023.03.01) |
| Jun 26, 2023 | 83.55% (0.83551) | 97.95th | v3 (v2023.03.01) |
| Mar 7, 2023 | 82.89% (0.82890) | 97.80th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.81% (0.01815) | 77.08th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.81% (0.01815) | 77.03th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.81% (0.01815) | 75.00th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.81% (0.01815) | 54.30th | v2 (v2022.01.01) |
References (15)
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=8252 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/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/77581 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-2015-2697 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1275863 Issue Tracking
- https://github.com/krb5/krb5/commit/f0c094a1b745d91ef2f9a4eae2149aac026a5789 x_refsource_CONFIRMPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2015-2697
- https://security.gentoo.org/glsa/201611-14 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2015-2697
Change history (0)
No recorded changes yet.