ZDI-CAN-23077: Adobe Acrobat Reader DC AcroForm Use-After-Free Information Disclosure Vulnerability

Affected versions

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

• adobe acrobat20.001.30002 and later · before 20.005.30574
• adobe acrobat dc15.007.20033 and later · before 23.008.20533
• adobe acrobat reader20.001.30002 and later · before 20.005.30574
• adobe acrobat reader dc15.007.20033 and later · before 23.008.20533

Versions reported by the vendor

Affected version ranges reported by the assigning authority (adobe). Independent of NVD's CPE analysis and usually ahead of it.

• Adobe Acrobat Reader

  • up to and including 23.008.20470affected · semver

Other highest-scoring records for the same primary product.

• CVE-2011-2462Unspecified vulnerability in the U3D component in Adobe Reader and Acrobat 10.1.1 and earlier on Windows and Mac OS X, and Adobe Reader 9.x KEV
  96Now
• CVE-2013-3346Adobe Reader and Acrobat 9.x before 9.5.5, 10.x before 10.1.7, and 11.x before 11.0.03 allow attackers to execute arbitrary code or cause a KEV
  93Now
• CVE-2021-21017Acrobat Reader DC Heap-based Buffer Overflow Vulnerability Could Lead To Arbitrary Code ExecutionKEV
  91Now
• CVE-2009-3459Heap-based buffer overflow in Adobe Reader and Acrobat 7.x before 7.1.4, 8.x before 8.1.7, and 9.x before 9.2 allows remote attackers to exeKEV
  91Now
• CVE-2008-2992Stack-based buffer overflow in Adobe Acrobat and Reader 8.1.2 and earlier allows remote attackers to execute arbitrary code via a PDF file tKEV
  91Now
• CVE-2009-3953The U3D implementation in Adobe Reader and Acrobat 9.x before 9.3, 8.x before 8.2 on Windows and Mac OS X, and 7.x before 7.1.4 allows remotKEV
  90Now

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.