CVE-2019-3556
CVSS V2 Medium 5.5
CVSS V3 High 8.1
Description
HHVM supports the use of an "admin" server which accepts administrative requests over HTTP. One of those request handlers, dump-pcre-cache, can be used to output cached regular expressions from the current execution context into a file. The handler takes a parameter which specifies where on the filesystem to write this data. The parameter is not validated, allowing a malicious user to overwrite arbitrary files where the user running HHVM has write access. This issue affects HHVM versions prior to 4.56.2, all versions between 4.57.0 and 4.78.0, as well as 4.79.0, 4.80.0, 4.81.0, 4.82.0, and 4.83.0.
Overview
- CVE ID
- CVE-2019-3556
- Assigner
- cve-assign@fb.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-10-26T20:15:07
- Last Modified Date
- 2021-10-29T16:38:50
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* | 1 | OR | 4.56.2 | |
| cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:* | 1 | OR | 4.57.0 | 4.78.0 |
| cpe:2.3:a:facebook:hhvm:4.79.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:facebook:hhvm:4.80.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:facebook:hhvm:4.81.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:facebook:hhvm:4.82.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:facebook:hhvm:4.83.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:S/C:N/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- SINGLE
- Confidentiality Impact
- NONE
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 5.5
- Severity
- MEDIUM
- Exploitability Score
- 8
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 8.1
- Base Severity
- HIGH
- Exploitability Score
- 2.8
- Impact Score
- 5.2
References
| Reference URL | Reference Tags |
|---|---|
| https://www.facebook.com/security/advisories/cve-2019-3556 | Broken Link |
| https://github.com/facebook/hhvm/commit/abe0b29e4d3a610f9bc920b8be4ad8403364c2d4 | Patch Third Party Advisory |
| https://hhvm.com/blog/2020/11/12/security-update.html | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2019-3556 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3556 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:49:07 | Added to TrackCVE | |||
| 2022-12-05 13:18:10 | 2021-10-26T20:15Z | 2021-10-26T20:15:07 | CVE Published Date | updated |
| 2022-12-05 13:18:10 | 2021-10-29T16:38:50 | CVE Modified Date | updated | |
| 2022-12-05 13:18:10 | Analyzed | Vulnerability Status | updated |