CVE-2021-21707
medium · 5.3In 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.
5.3
CVSS
26.0%
EPSS (exploit prob.)
98th
EPSS percentile
2021-11-29
Published
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weaknesses
CWE-159
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| php | php | >= 7.3.0, < 7.3.33 |
| php | php | >= 7.4.0, < 7.4.26 |
| php | php | >= 8.0.0, < 8.0.13 |
| netapp | clustered_data_ontap | all versions |
| debian | debian_linux | 10.0 |
| debian | debian_linux | 11.0 |
| tenable | tenable.sc | < 5.21.0 |
Check a specific version with /api/v1/cve/match.
References
- https://bugs.php.net/bug.php?id=79971
- https://lists.debian.org/debian-lts-announce/2022/12/msg00030.html
- https://security.netapp.com/advisory/ntap-20211223-0005/
- https://www.debian.org/security/2022/dsa-5082
- https://www.tenable.com/security/tns-2022-09
- https://bugs.php.net/bug.php?id=79971
- https://lists.debian.org/debian-lts-announce/2022/12/msg00030.html
- https://security.netapp.com/advisory/ntap-20211223-0005/
- https://www.debian.org/security/2022/dsa-5082
- https://www.tenable.com/security/tns-2022-09
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2021-21707