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CVE-2020-1898 The fb_unserialize function did not impose a depth limit for nested deserialization

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.

Produits et versions touchés

Produit Versions touchées Corrigé en
HHVM 4.62.0 4.62.1
HHVM 4.61.0 4.61.1
HHVM 4.60.0 4.60.1
HHVM 4.59.0 4.59.1
HHVM 4.58 4.58.0 → < 4.58.2 4.58.2
HHVM 4.57.0 4.57.1
HHVM 4.56 premières → < 4.56.1 4.56.1
HHVM 4.33 4.33.0 → dernières Pas de correctif indiqué
HHVM 4.32 premières → < 4.32.3 4.32.3

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