Denial of Service Vulnerability in BSD libc RegComp Implementation
CVE-2011-3336

7.5HIGH

Key Information:

Vendor

Apple
Status
macOS
Vendor
CVE Published:
12 February 2020

What is CVE-2011-3336?

The regcomp function in the BSD implementation of libc is susceptible to denial of service attacks due to stack exhaustion. An attacker could craft specific regular expressions that consume excessive stack space, leading to application crashes and service downtime. This vulnerability highlights the importance of robust input validation and the need for developers to implement safeguards against malicious input patterns.

Affected Version(s)

macOS through 2011

References

http://seclists.org/fulldisclosure/2014/Mar/166
mailing-listx_refsource_FULLDISC
http://www.securityfocus.com/bid/50541
vdb-entryx_refsource_BID
https://www.securityfocus.com/archive/1/520390
mailing-listx_refsource_BUGTRAQ

EPSS Score

20% chance of being exploited in the next 30 days.

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

.