Symfony: YAML Parser ReDoS via Catastrophic Backtracking in Parser::cleanup() Regex
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 5.4.52, 6.4.40, 7.4.12, 8.0.12
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, Symfony\Component\Yaml\Parser::cleanup() used regular expressions with overlapping quantifiers for YAML directive, comment, and document marker cleanup, allowing crafted input to make parsing hang for an arbitrarily long time. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- symfony symfony
fixed in 5.4.52; From 6.0.0-BETA1 · fixed in 6.4.40; From 7.0.0-BETA1 · fixed in 7.4.12; From 8.0.0-BETA1 · fixed in 8.0.12
- symfony yaml
fixed in 5.4.52; From 6.0.0-BETA1 · fixed in 6.4.40; From 7.0.0-BETA1 · fixed in 7.4.12; From 8.0.0-BETA1 · fixed in 8.0.12
- symfony/yamlPackagist
fixed in 5.4.52
- symfony/symfonyPackagist
fixed in 5.4.52
- symfony/symfonyPackagist
From 6.0.0 · fixed in 6.4.40
- symfony/symfonyPackagist
From 7.0.0 · fixed in 7.4.12
- symfony/symfonyPackagist
From 8.0.0 · fixed in 8.0.12
- symfony/yamlPackagist
From 6.0.0 · fixed in 6.4.40
- symfony/yamlPackagist
From 7.0.0 · fixed in 7.4.12
- symfony/yamlPackagist
From 8.0.0 · fixed in 8.0.12