Denial of Service Vulnerability in Libksba by GnuPG
CVE-2016-4356

7.5HIGH

Key Information:

Vendor

Gnupg

Status
Libksba
Vendor
CVE Published:
13 June 2016

What is CVE-2016-4356?

The append_utf8_value function in the DN decoder of Libksba before version 1.3.3 is susceptible to a denial of service condition. This vulnerability arises when remote attackers manipulate invalid UTF-8 encoded data, leading to an out-of-bounds read by clearing the high bit of the subsequent byte. Exploiting this vulnerability can disrupt service availability, making it crucial for users and administrators to apply updates to mitigate potential risks.

References

http://www.openwall.com/lists/oss-security/2016/05/10/3
mailing-listx_refsource_MLIST
http://www.ubuntu.com/usn/USN-2982-1
vendor-advisoryx_refsource_UBUNTU
http://www.openwall.com/lists/oss-security/2016/04/29/5
mailing-listx_refsource_MLIST

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.