Vulnerability 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 Score
7.5
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Libidn | <= 1.32 |
Related Weaknesses (CWE)
References
- http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=1fbee57ef3c72db2206dd87e4Issue TrackingPatch
- 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 ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/21/4Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/92070Third Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-3068-1Third Party Advisory
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e3
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8
- 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=1fbee57ef3c72db2206dd87e4Issue TrackingPatch
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00005.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00098.htmlThird Party Advisory
FAQ
What is CVE-2016-6263?
CVE-2016-6263 is a vulnerability with a CVSS score of 7.5 (HIGH). 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.
How severe is CVE-2016-6263?
CVE-2016-6263 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-6263?
Check the references section above for vendor advisories and patch information. Affected products include: Gnu Libidn.