Vulnerability · Published Mar 3, 2020 · Assigned by facebook
CVE-2020-1888
High 7.5
In plain English
A high-severity out-of-bounds read in HHVM from Facebook. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 67% of all known vulnerabilities).
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.1%top 33.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Insufficient boundary checks when decoding JSON in handleBackslash reads out of bounds memory, potentially leading to DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 (inclusive), versions between 4.9.0 and 4.32.0 (inclusive), and versions prior to 4.8.7.
Affected products (as reported)
Weakness: CWE-125
References
- https://github.com/facebook/hhvm/commit/b3679121bb3c7017ff04b4c08402ffff5cf59b13 x_refsource_CONFIRM
- https://hhvm.com/blog/2020/02/20/security-update.html x_refsource_CONFIRM