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CVE-2020-1916 An incorrect size calculation in ldap_escape may lead to an integer overflow when overly long input is passed in,…

Description

An incorrect size calculation in ldap_escape may lead to an integer overflow when overly long input is passed in, resulting in an out-of-bounds write. This issue affects HHVM prior to 4.56.2, all versions between 4.57.0 and 4.78.0, 4.79.0, 4.80.0, 4.81.0, 4.82.0, 4.83.0.

Affected products and versions

Product Affected versions Fixed in
HHVM 4.83.0 4.83.1
HHVM 4.82.0 4.82.1
HHVM 4.81.0 4.81.1
HHVM 4.80.0 4.80.1
HHVM 4.79.0 4.79.1
HHVM 4.78 earliest → < 4.78.1 4.78.1
HHVM 4.57 4.57.0 → latest No fix stated
HHVM 4.56 earliest → < 4.56.2 4.56.2

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