CVE-2020-7070
Medium
Description
In PHP versions 7.2.x below 7.2.34, 7.3.x below 7.3.23 and 7.4.x below 7.4.11, when PHP is processing incoming HTTP cookie values, the cookie names are url-decoded. This may lead to cookies with prefixes like __Host confused with cookies that decode to such prefix, thus leading to an attacker being able to forge cookie which is supposed to be secure. See also CVE-2020-8184 for more information.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Php
PublishedOct 2, 2020
First seenOct 2, 2020
Weakness typeCWE-20Improper input validation
How to fix
Update
- php php7.2.34, 7.3.23, 7.4.11 or later
- tenable tenable.sc5.19.0 or later
Vendor advisories
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RRU57N3OSYZPOMFWPRDNVH7EMYOTSZ66/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7EVDN7D3IB4EAI4D3ZOM2OJKQ5SD7K4E/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P2J3ZZDHCSX65T5QWV4AHBN7MOJXBEKG/
- usn.ubuntu.com/4583-1/
- security.gentoo.org/glsa/202012-16
- debian.org/security/2021/dsa-4856
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| php php | 7.2.0 ≤ v < 7.2.34, 7.3.0 ≤ v < 7.3.23, 7.4.0 ≤ v < 7.4.11 | 7.2.34, 7.3.23, 7.4.11 |
| fedoraproject fedora | 31, 32, 33 | — |
| debian debian_linux | 9.0, 10.0 | — |
| opensuse leap | 15.1, 15.2 | — |
| canonical ubuntu_linux | 12.04, 14.04, 16.04, 18.04, 20.04 | — |
| netapp clustered_data_ontap | No range specified | — |
| tenable tenable.sc | v < 5.19.0 | 5.19.0 |
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