PT-2016-6811 · Gnu+3 · Libidn+3

Hanno Böck · Published 2016-07-21 · Updated 2024-06-15 · CVE-2016-6261

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions libidn versions prior to 1.33

Description The issue allows context-dependent attackers to cause a denial of service, resulting in an out-of-bounds read and crash, via 64 bytes of input. This is due to a problem in the idna to ascii 4i function in lib/idna.c.

Recommendations For versions prior to 1.33, update to version 1.33 or later to resolve the issue. As a temporary workaround, consider restricting input to prevent the 64 bytes of input that can cause the denial of service.

Fix

DoS

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

ALT-PU-2016-1770

ALT-PU-2018-1106

CVE-2016-6261

DLA-582-1

DSA-3658-1

MGASA-2016-0269

OPENSUSE-SU-2024:10566-1

OPENSUSE-SU-2024:10792-1

SUSE-SU-2016:2079-1

SUSE-SU-2016:2291-1

SUSE-SU-2017:2699-1

SUSE-SU-2017:2700-1

USN-3068-1

Affected Products

Alt Linux

Suse

Ubuntu

Libidn

References · 78

• https://ubuntu.com/security/CVE-2015-8948 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3068-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2016-6261 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2016-6261 · Vendor Advisory
• http://ubuntu.com/usn/USN-3068-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-6262 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2016:2079-1 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-3658-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-6261 · Security Note
• https://ubuntu.com/security/CVE-2016-6263 · Vendor Advisory
• https://ubuntu.com/security/CVE-2015-2059 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3068-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-6261 · Vendor Advisory
• http://git.savannah.gnu.org/cgit/libidn.git/commit/?id=f20ce1128fb7f4d33297eee307dddaf0f92ac72d · Patch
• https://osv.dev/vulnerability/openSUSE-SU-2024:10792-1 · Vendor Advisory