by Kastro
Paper/Archive/CVE-2020-1916

CVE-2020-1916

Facebook HHVM — 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-…

EPSS 1%CVSS 9.8
critical.is priorityof 100
44
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 72.2.722 × 2014.4No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
HHVM4.83.04.83.1CNA
HHVM4.82.04.83.1CNA
HHVM4.81.04.83.1CNA
HHVM4.80.04.83.1CNA
HHVM4.79.04.83.1CNA
HHVM4.57.0 – < unspecifiedunspecifiedCNA
HHVMunspecified – < 4.56.24.56.2CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

refhhvm.com/blog/2020/11/12/security-update.htmlrefgithub.com/facebook/hhvm/commit/abe0b29e4d3a610f9bc920b8be4ad8403364c2d4