CVE-2020-1918 (GCVE-0-2020-1918)
Vulnerability from cvelistv5 – Published: 2021-03-10 15:50 – Updated: 2024-08-04 06:53
VLAI?
Summary
In-memory file operations (ie: using fopen on a data URI) did not properly restrict negative seeking, allowing for the reading of memory prior to the in-memory buffer. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0.
Severity ?
No CVSS data available.
CWE
- CWE-127 - Buffer Under-read (CWE-127)
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| HHVM |
Unaffected:
4.98.1 , < unspecified
(custom)
Affected: 4.98.0 Unaffected: 4.97.1 , < unspecified (custom) Affected: 4.97.0 Unaffected: 4.96.1 , < unspecified (custom) Affected: 4.96.0 Unaffected: 4.95.1 , < unspecified (custom) Affected: 4.95.0 Unaffected: 4.94.1 , < unspecified (custom) Affected: 4.94.0 Unaffected: 4.93.2 , < unspecified (custom) Affected: 4.81.0 , < unspecified (custom) Unaffected: 4.80.2 , < unspecified (custom) Affected: 4.57.0 , < unspecified (custom) Unaffected: 4.56.3 , < unspecified (custom) Affected: unspecified , < 4.56.3 (custom) |
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}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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