CVE-2020-7068: Use After Free
First published: Thu Aug 06 2020(Updated: )
In PHP versions 7.2.x below 7.2.33, 7.3.x below 7.3.21 and 7.4.x below 7.4.9, while processing PHAR files using phar extension, phar_parse_zipfile could be tricked into accessing freed memory, which could lead to a crash or information disclosure.
Credit: security@php.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| <7.2.33 | 7.2.33 | |
| PHP PHP | >=7.2.0<7.2.33 | |
| PHP PHP | >=7.3.0<7.3.21 | |
| PHP PHP | >=7.4.0<7.4.9 | |
| Debian Debian Linux | =10.0 | |
| Tenable Tenable.sc | <5.19.0 | |
| debian/php7.3 | 7.3.31-1~deb10u1 7.3.31-1~deb10u5 | |
| debian/php7.4 | 7.4.33-1+deb11u4 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://bugs.php.net/bug.php?id=79797
- https://security.gentoo.org/glsa/202009-10
- https://security.netapp.com/advisory/ntap-20200918-0005/
- https://www.debian.org/security/2021/dsa-4856
- https://www.tenable.com/security/tns-2021-14
- https://www.php.net/ChangeLog-7.php#7.2.33 (Advisory)
- https://bugs.php.net/79797
- https://git.php.net/?p=php-src.git;a=commit;h=7355ab81763a3d6a04ac11660e6a16d58838d187
- https://security-tracker.debian.org/tracker/CVE-2020-7068
Frequently Asked Questions
What is CVE-2020-7068?
CVE-2020-7068 is a vulnerability in PHP that allows for the use of a freed hash key in the phar_parse_zipfile function.
How does CVE-2020-7068 affect PHP?
CVE-2020-7068 affects PHP versions up to and excluding 7.2.33.
What is the severity of CVE-2020-7068?
The severity of CVE-2020-7068 is not specified.
How can I fix CVE-2020-7068?
To fix CVE-2020-7068, update PHP to version 7.2.33 or later.
Where can I find more information about CVE-2020-7068?
More information about CVE-2020-7068 can be found in the PHP ChangeLog at https://www.php.net/ChangeLog-7.php#7.2.33.
- agent/author
- agent/description
- agent/event
- agent/first-publish-date
- agent/last-modified-date
- agent/references
- agent/remedy
- agent/severity
- agent/softwarecombine
- agent/tags
- agent/type
- agent/weakness
- collector/nvd-index
- collector/php-changelog
- source/PHP
- agent/software-canonical-lookup
- collector/security-tracker-debian
- vendor/php
- canonical/php php
- version/php php/7.2.0
- version/php php/7.3.0
- version/php php/7.4.0
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/10.0
- vendor/tenable
- canonical/tenable tenable.sc
- package-manager/debian