CVE-2023-0616: If a MIME email combines OpenPGP and OpenPGP MIME data in a certain way Thunderbird repeatedly attempts to process and display the message,

Affected versions

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

• mozilla thunderbirdbefore 102.8

Versions reported by the vendor

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

• Mozilla Thunderbird

  • unspecified and later · before 102.8affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2019-11705A flaw in Thunderbird's implementation of iCal causes a stack buffer overflow in icalrecur_add_bydayrules when processing certain email mess
  42Plan
• CVE-2019-11704A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in icalmemory_strdup_and_dequote when processing certain email
  42Plan
• CVE-2019-11703A flaw in Thunderbird's implementation of iCal causes a heap buffer overflow in parser_get_next_char when processing certain email messages,
  42Plan

Published before and after this one in the same product

• ← EarlierCVE-2023-0430Jun 2, 2023 · Certificate OCSP revocation status was not checked when verifying S/Mime signatures.
  26Monitor
• ← EarlierCVE-2023-0547Jun 2, 2023 · OCSP revocation status of recipient certificates was not checked when sending S/Mime encrypted email, and revoked certificates would be acce
  26Monitor
• Later →CVE-2023-3417Jul 24, 2023 · File Extension Spoofing using the Text Direction Override Character
  30Monitor

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

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

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

1function expand(node) {2  return node.children.map(expand);3}

1const MAX_DEPTH = 32;2function expand(node, depth = 0) {3  if (depth > MAX_DEPTH) throw new Error("too deep");4  return node.children.map((c) => expand(c, depth + 1));5}

Attack context

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