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CVE-2020-7070

Good to know:

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Date: October 2, 2020

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.

Language: C

Severity Score

Related Resources (20)

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00045.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7EVDN7D3IB4EAI4D3ZOM2OJKQ5SD7K4E/
https://hackerone.com/reports/895727
https://security.gentoo.org/glsa/202012-16
https://www.tenable.com/security/tns-2021-14
https://access.redhat.com/security/cve/CVE-2020-7070
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P2J3ZZDHCSX65T5QWV4AHBN7MOJXBEKG/
https://security-tracker.debian.org/tracker/CVE-2020-7070
http://cve.circl.lu/cve/CVE-2020-8184
https://lists.debian.org/debian-lts-announce/2020/10/msg00008.html
https://usn.ubuntu.com/4583-1/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RRU57N3OSYZPOMFWPRDNVH7EMYOTSZ66/
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-7070
https://security.netapp.com/advisory/ntap-20201016-0001/
https://nvd.nist.gov/vuln/detail/CVE-2020-7070
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00067.html
https://bugs.php.net/bug.php?id=79699
https://www.debian.org/security/2021/dsa-4856
https://www.oracle.com/security-alerts/cpuoct2021.html
https://www.mend.io/vulnerability-database/CVE-2020-7070

Severity Score

Weakness Type (CWE)

Reliance on Cookies without Validation and Integrity Checking

CWE-565

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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