CVE-2021-21707
CVSS V2 Medium 5
CVSS V3 Medium 5.3
Description
In PHP versions 7.3.x below 7.3.33, 7.4.x below 7.4.26 and 8.0.x below 8.0.13, certain XML parsing functions, like simplexml_load_file(), URL-decode the filename passed to them. If that filename contains URL-encoded NUL character, this may cause the function to interpret this as the end of the filename, thus interpreting the filename differently from what the user intended, which may lead it to reading a different file than intended.
Overview
- CVE ID
- CVE-2021-21707
- Assigner
- security@php.net
- Vulnerability Status
- Analyzed
- Published Version
- 2021-11-29T07:15:06
- Last Modified Date
- 2023-02-16T03:07:25
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:php:php:*:*:*:*:*:*:*:* | 1 | OR | 7.3.0 | 7.3.33 |
| cpe:2.3:a:php:php:*:*:*:*:*:*:*:* | 1 | OR | 7.4.0 | 7.4.26 |
| cpe:2.3:a:php:php:*:*:*:*:*:*:*:* | 1 | OR | 8.0.0 | 8.0.13 |
| cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:tenable:tenable.sc:*:*:*:*:*:*:*:* | 1 | OR | 5.21.0 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:N/A:N
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- LOW
- Availability Impact
- NONE
- Base Score
- 5.3
- Base Severity
- MEDIUM
- Exploitability Score
- 3.9
- Impact Score
- 1.4
References
| Reference URL | Reference Tags |
|---|---|
| https://bugs.php.net/bug.php?id=79971 | Exploit Issue Tracking Patch Release Notes Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2022/12/msg00030.html | |
| https://security.netapp.com/advisory/ntap-20211223-0005/ | Third Party Advisory |
| https://www.debian.org/security/2022/dsa-5082 | Third Party Advisory |
| https://www.tenable.com/security/tns-2022-09 | Patch Release Notes Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-21707 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21707 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-04-04 00:42:06 | Added to TrackCVE | |||
| 2022-12-05 15:12:42 | 2021-11-29T07:15Z | 2021-11-29T07:15:06 | CVE Published Date | updated |
| 2022-12-05 15:12:42 | 2022-10-05T01:47:22 | CVE Modified Date | updated | |
| 2022-12-05 15:12:42 | Analyzed | Vulnerability Status | updated | |
| 2022-12-05 15:12:47 | References | updated | ||
| 2022-12-15 22:12:35 | 2022-12-15T21:15:11 | CVE Modified Date | updated | |
| 2022-12-15 22:12:35 | Analyzed | Modified | Vulnerability Status | updated |
| 2022-12-15 22:12:35 | References | updated | ||
| 2022-12-18 08:36:46 | Modified | Undergoing Analysis | Vulnerability Status | updated |
| 2023-02-16 03:14:40 | 2023-02-16T03:07:25 | CVE Modified Date | updated | |
| 2023-02-16 03:14:40 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |
| 2023-02-16 03:14:41 | Weakness Enumeration | update |