CVE-2016-6263
Detail
Modified After Enrichment This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Description
The stringprep_utf8_nfkc_normalize function in lib/nfkc.c in libidn before 1.33 allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via crafted UTF-8 data.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 Severity and Vector Strings:
Vector:
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
References to Advisories, Solutions, and Tools
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URL
Source(s)
Tag(s)
http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=1fbee57ef3c72db2206dd87e4162108b2f425555
CVE, MITRE
Issue Tracking
Patch
http://lists.opensuse.org/opensuse-updates/2016-08/msg00005.html
CVE, MITRE
Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2016-08/msg00098.html
CVE, MITRE
Third Party Advisory
http://www.debian.org/security/2016/dsa-3658
CVE, MITRE
http://www.openwall.com/lists/oss-security/2016/07/20/6
CVE, MITRE
Mailing List
Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/07/21/4
CVE, MITRE
Mailing List
Third Party Advisory
http://www.securityfocus.com/bid/92070
CVE, MITRE
Third Party Advisory
VDB Entry
http://www.ubuntu.com/usn/USN-3068-1
CVE, MITRE
Third Party Advisory
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
CVE, MITRE
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
CVE, MITRE
https://lists.gnu.org/archive/html/help-libidn/2016-07/msg00009.html
CVE, MITRE
Vendor Advisory
https://security.gentoo.org/glsa/201908-06
CVE, MITRE
Weakness Enumeration
CWE-ID
CWE Name
Source
CWE-125
Out-of-bounds Read
NIST
Change History
11 change records found show changes
CVE Modified by MITRE
6/16/2026 8:50:43 PM
Action
Type
Old Value
New Value
Added
Affected
[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]
CVE Status Change
5/06/2026 6:30:45 PM
Action
Type
Old Value
New Value
CVE Modified by CVE
11/20/2024 9:55:46 PM
Action
Type
Old Value
New Value
Added
Reference
http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=1fbee57ef3c72db2206dd87e4162108b2f425555
Added
Reference
http://lists.opensuse.org/opensuse-updates/2016-08/msg00005.html
Added
Reference
http://lists.opensuse.org/opensuse-updates/2016-08/msg00098.html
Added
Reference
http://www.debian.org/security/2016/dsa-3658
Added
Reference
http://www.openwall.com/lists/oss-security/2016/07/20/6
Added
Reference
http://www.openwall.com/lists/oss-security/2016/07/21/4
Added
Reference
http://www.securityfocus.com/bid/92070
Added
Reference
http://www.ubuntu.com/usn/USN-3068-1
Added
Reference
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
Added
Reference
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
Added
Reference
https://lists.gnu.org/archive/html/help-libidn/2016-07/msg00009.html
Added
Reference
https://security.gentoo.org/glsa/201908-06
CVE Modified by MITRE
5/14/2024 12:03:10 AM
Action
Type
Old Value
New Value
CVE Modified by MITRE
11/06/2023 9:33:55 PM
Action
Type
Old Value
New Value
Added
Reference
MITRE https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E [No types assigned]
Added
Reference
MITRE https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E [No types assigned]
Removed
Reference
MITRE https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
Removed
Reference
MITRE https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
CVE Modified by MITRE
6/29/2021 11:15:10 AM
Action
Type
Old Value
New Value
Added
Reference
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E [No Types Assigned]
CVE Modified by MITRE
6/28/2021 11:15:10 AM
Action
Type
Old Value
New Value
Added
Reference
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E [No Types Assigned]
CVE Modified by MITRE
8/15/2019 2:15:12 PM
Action
Type
Old Value
New Value
Added
Reference
https://security.gentoo.org/glsa/201908-06 [No Types Assigned]
CVE Modified by MITRE
11/28/2016 3:31:11 PM
Action
Type
Old Value
New Value
Added
Reference
http://www.debian.org/security/2016/dsa-3658 [No Types Assigned]
Modified Analysis by NIST
9/08/2016 10:49:21 AM
Action
Type
Old Value
New Value
Added
CVSS V3
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added
CVSS V2
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Added
CWE
CWE-125
Added
CPE Configuration
Configuration 1
OR
*cpe:2.3:a:gnu:libidn:1.32:*:*:*:*:*:*:* (and previous)
Changed
Reference Type
http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=1fbee57ef3c72db2206dd87e4162108b2f425555 No Types Assigned
http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=1fbee57ef3c72db2206dd87e4162108b2f425555 Issue Tracking, Patch
Changed
Reference Type
http://lists.opensuse.org/opensuse-updates/2016-08/msg00005.html No Types Assigned
http://lists.opensuse.org/opensuse-updates/2016-08/msg00005.html Third Party Advisory
Changed
Reference Type
http://lists.opensuse.org/opensuse-updates/2016-08/msg00098.html No Types Assigned
http://lists.opensuse.org/opensuse-updates/2016-08/msg00098.html Third Party Advisory
Changed
Reference Type
http://www.openwall.com/lists/oss-security/2016/07/20/6 No Types Assigned
http://www.openwall.com/lists/oss-security/2016/07/20/6 Third Party Advisory, Mailing List
Changed
Reference Type
http://www.openwall.com/lists/oss-security/2016/07/21/4 No Types Assigned
http://www.openwall.com/lists/oss-security/2016/07/21/4 Third Party Advisory, Mailing List
Changed
Reference Type
http://www.securityfocus.com/bid/92070 No Types Assigned
http://www.securityfocus.com/bid/92070 Third Party Advisory, VDB Entry
Changed
Reference Type
http://www.ubuntu.com/usn/USN-3068-1 No Types Assigned
http://www.ubuntu.com/usn/USN-3068-1 Third Party Advisory
Changed
Reference Type
https://lists.gnu.org/archive/html/help-libidn/2016-07/msg00009.html No Types Assigned
https://lists.gnu.org/archive/html/help-libidn/2016-07/msg00009.html Vendor Advisory
Initial CVE Analysis
9/08/2016 10:19:36 AM
Action
Type
Old Value
New Value
Quick Info
CVE Dictionary Entry: CVE-2016-6263 NVD
Published Date: 09/07/2016 NVD
Last Modified: 06/16/2026
Source: MITRE
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