libidn: out-of-bounds read with stringprep on invalid UTF-8
Published Aug 12, 2015
7.5
HIGHCVSS 2.0
EPSS 3.19%
Description
The stringprep_utf8_to_ucs4 function in libin before 1.31, as used in jabberd2, allows context-dependent attackers to read system memory and possibly have other unspecified impact via invalid UTF-8 characters in a string, which triggers an out-of-bounds read.
Affected products
No data.
Configuration 3
- 21
- 22
No data.
Red Hat Enterprise Linux 5
libidn
Will not fix
Red Hat Enterprise Linux 6
libidn
Will not fix
Red Hat Enterprise Linux 7
libidn
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | libidn | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | libidn | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | libidn | 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:P/I:P/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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.19% (0.03185) | 87.63th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.12% (0.03124) | 86.12th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.83% (0.00832) | 72.43th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.05% (0.02048) | 73.13th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.83% (0.00832) | 72.95th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.73% (0.00735) | 81.46th | v3 (v2023.03.01) |
| Mar 8, 2024 | 0.93% (0.00930) | 82.58th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.93% (0.00930) | 80.58th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.54% (0.01537) | 74.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
References (14)
- http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=2e97c279 x_refsource_CONFIRMIssue TrackingPatch
- http://lists.fedoraproject.org/pipermail/package-announce/2015-July/162537.html vendor-advisoryx_refsource_FEDORAThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-July/162549.html vendor-advisoryx_refsource_FEDORAThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2015-07/msg00042.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00098.html vendor-advisoryx_refsource_SUSE
- http://www.debian.org/security/2016/dsa-3578 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2015/02/23/25 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/72736 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-3068-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-2059 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1197796 Issue Tracking
- https://github.com/jabberd2/jabberd2/issues/85 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2015-2059
- https://www.cve.org/CVERecord?id=CVE-2015-2059
Change history (0)
No recorded changes yet.