CVE-2020-1899
Last modified
CVE-2020-1899 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 1.22% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Hhvm | < 4.32.3 | |
| Hhvm | >= 4.33.0, < 4.56.1 | |
| Hhvm | 4.57.0 | |
| Hhvm | 4.58.0 | |
| Hhvm | 4.58.1 | |
| Hhvm | 4.59.0 | |
| Hhvm | 4.60.0 | |
| Hhvm | 4.61.0 | |
| Hhvm | 4.62.0 |
References
- https://github.com/facebook/hhvm/commit/1107228a5128d3ca1c4add8ac1635d933cbbe2e9Patch, Third Party Advisory
- https://hhvm.com/blog/2020/06/30/security-update.htmlVendor Advisory
- https://github.com/facebook/hhvm/commit/1107228a5128d3ca1c4add8ac1635d933cbbe2e9Patch, Third Party Advisory
- https://hhvm.com/blog/2020/06/30/security-update.htmlVendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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