Integer Overflow Vulnerability in Lighttpd Web Server
CVE-2019-11072

9.8CRITICAL

Key Information:

Vendor

Lighttpd

Status
Lighttpd
Vendor
CVE Published:
10 April 2019

What is CVE-2019-11072?

Lighttpd versions prior to 1.4.54 contain a vulnerability characterized by a signed integer overflow. This flaw could enable remote attackers to trigger a denial of service, causing the application to crash through a specially crafted HTTP GET request. The issue arises particularly when the new feature introduced in version 1.4.50 is enabled via configuration. When corrupt input is processed, lighttpd may invoke an abort due to the inability to handle the underflow, leading to an application exit. Notably, the feature must be explicitly activated in the configuration file (lighttpd.conf) for exploitation to occur.

References

https://redmine.lighttpd.net/issues/2945
x_refsource_MISC
https://github.com/lighttpd/lighttpd1.4/commit/32120d5b8b...
x_refsource_MISC
http://www.securityfocus.com/bid/107907
vdb-entryx_refsource_BID

EPSS Score

5% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.