Use-after-free vulnerability in Open Litespeed before 1.3.10.

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• litespeedtech openlitespeedbefore 1.3.10

Other highest-scoring records for the same primary product.

• CVE-2020-5519The WebAdmin Console in OpenLiteSpeed before v1.6.5 does not strictly check request URLs, as demonstrated by the "Server Configuration > Ext
  39Monitor
• CVE-2022-0073Authenticated Remote Code Execution in OpenLiteSpeed Web Server
  38Monitor
• CVE-2021-26758Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows attackers to gain root terminal access and exec
  36Monitor
• CVE-2022-0074Privilege Escalation in OpenLiteSpeed Web Server
  35Monitor
• CVE-2023-40518LiteSpeed OpenLiteSpeed before 1.7.18 does not strictly validate HTTP request headers.
  30Monitor
• CVE-2018-19792The server in LiteSpeed OpenLiteSpeed before 1.5.0 RC6 allows local users to cause a denial of service (buffer overflow) or possibly have un
  26Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1free(dev->buf);2/* ... another thread is still running ... */3process(dev->buf);

1lock(&dev->lock);2free(dev->buf);3dev->buf = NULL;4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.