Vulnerability Description
The idna_to_ascii_4i function in lib/idna.c in libidn before 1.33 allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via 64 bytes of input.
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 |
|---|---|---|
| Opensuse | Leap | 42.1 |
| Gnu | Libidn | <= 1.32 |
| Canonical | Ubuntu Linux | 12.04 |
Related Weaknesses (CWE)
References
- http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=f20ce1128fb7f4d33297eee30Issue TrackingPatch
- 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/2015-07/msg00016.htmlMailing ListVendor Advisory
- https://lists.gnu.org/archive/html/help-libidn/2016-07/msg00009.htmlVendor Advisory
- http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=f20ce1128fb7f4d33297eee30Issue TrackingPatch
- 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
FAQ
What is CVE-2016-6261?
CVE-2016-6261 is a vulnerability with a CVSS score of 7.5 (HIGH). The idna_to_ascii_4i function in lib/idna.c in libidn before 1.33 allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via 64 bytes of input.
How severe is CVE-2016-6261?
CVE-2016-6261 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-2016-6261?
Check the references section above for vendor advisories and patch information. Affected products include: Opensuse Leap, Gnu Libidn, Canonical Ubuntu Linux.