Out-of-bounds Read in Gnu Libidn
CVE-2016-6261
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.
Vulnerability class: Buffer Overflow
EPSS: 0.039 (88.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Gnu Libidn
- Canonical Ubuntu_linux — versions 12.04, 14.04, 16.04
- Opensuse Leap — versions 42.1
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_SUSE)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- cve@mitre.org (vendor-advisory, x_refsource_DEBIAN)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Issue Tracking)
- cve@mitre.org (Vendor Advisory, mailing-list, x_refsource_MLIST)
- cve@mitre.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- cve@mitre.org (Vendor Advisory, mailing-list, x_refsource_MLIST, Mailing List)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
Frequently asked questions
- What is CVE-2016-6261?
- CVE-2016-6261 is a high-severity vulnerability in Gnu Libidn, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2016-09-07.
- How severe is CVE-2016-6261?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2016-6261 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.