Unrated severityNVD Advisory· Published Mar 11, 2021· Updated Aug 4, 2024
CVE-2020-1898
CVE-2020-1898
Description
The fb_unserialize function did not impose a depth limit for nested deserialization. That meant a maliciously constructed string could cause deserialization to recurse, leading to stack exhaustion. This issue affected HHVM prior to v4.32.3, between versions 4.33.0 and 4.56.0, 4.57.0, 4.58.0, 4.58.1, 4.59.0, 4.60.0, 4.61.0, 4.62.0.
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Affected products
2Patches
Vulnerability mechanics
References
2- github.com/facebook/hhvm/commit/1746dfb11fc0048366f34669e74318b8278a684cmitrex_refsource_MISC
- hhvm.com/blog/2020/06/30/security-update.htmlmitrex_refsource_CONFIRM
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