A use-after-free vulnerability was observed in Rp_toString function of Artifex Software, Inc.

Affected versions

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

• artifex mujsup to 5000749f5afe3b956fc916e407309de840997f4a inclusive

Other highest-scoring records for the same primary product.

• CVE-2019-11411An issue was discovered in Artifex MuJS 1.0.5.
  40Plan
• CVE-2016-10133Heap-based buffer overflow in the js_stackoverflow function in jsrun.c in Artifex Software, Inc.
  40Plan
• CVE-2016-10141An integer overflow vulnerability was observed in the regemit function in regexp.c in Artifex Software, Inc.
  40Plan
• CVE-2016-7505A buffer overflow vulnerability was observed in divby function of Artifex Software, Inc.
  40Plan
• CVE-2021-33797Buffer-overflow in jsdtoa.c in Artifex MuJS in versions 1.0.1 to 1.1.1.
  39Monitor
• CVE-2021-45005Artifex MuJS v1.1.3 was discovered to contain a heap buffer overflow which is caused by conflicting JumpList of nested try/finally statement
  39Monitor

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.