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CVE-2020-1899

HIGH

7.5

Description

The unserialize() function supported a type code, "S", which was meant to be supported only for APC serialization. This type code allowed arbitrary memory addresses to be accessed as if they were static StringData objects. 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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/11/2021

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

facebook:hhvm

Weaknesses (CWE)

CWE-822CWE-119

References

https://github.com/facebook/hhvm/commit/1107228a5128d3ca1c4add8ac1635d933cbbe2e9(cve-assign@fb.com)

https://hhvm.com/blog/2020/06/30/security-update.html(cve-assign@fb.com)

https://github.com/facebook/hhvm/commit/1107228a5128d3ca1c4add8ac1635d933cbbe2e9(af854a3a-2127-422b-91ae-364da2661108)

https://hhvm.com/blog/2020/06/30/security-update.html(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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