VulnerabilityModified
CVE-2016-6263
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.
HIGH 7.5EPSS 3.88%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.88%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 3.88% probability · 90th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- gnu/libidn
- Source
- cve@mitre.org
References
- http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=1fbee57ef3c72db2206dd87e4162108b2f425555Issue Tracking, Patch
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00005.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00098.htmlThird Party Advisory
- http://www.debian.org/security/2016/dsa-3658
- http://www.openwall.com/lists/oss-security/2016/07/20/6Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/21/4Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/92070Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-3068-1Third Party Advisory
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.gnu.org/archive/html/help-libidn/2016-07/msg00009.htmlVendor Advisory
- https://security.gentoo.org/glsa/201908-06
- http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=1fbee57ef3c72db2206dd87e4162108b2f425555Issue Tracking, Patch
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00005.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00098.htmlThird Party Advisory
- http://www.debian.org/security/2016/dsa-3658
- http://www.openwall.com/lists/oss-security/2016/07/20/6Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/21/4Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/92070Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-3068-1Third Party Advisory
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.gnu.org/archive/html/help-libidn/2016-07/msg00009.htmlVendor Advisory
- https://security.gentoo.org/glsa/201908-06
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.