CVE-2018-20783: Buffer Overflow

Published Nov 12, 2018
·
Updated

Fixed bug (Heap Buffer Overflow (READ: 4) in pharparsepharfile). (CVE-2018-20783)

Other sources

In PHP before 5.6.39, 7.x before 7.0.33, 7.1.x before 7.1.25, and 7.2. ...

— Debian

Affected Software

16 affected componentsFixes available
redhat/rh-php71-php<0:7.1.30-1.el7
0:7.1.30-1.el7
redhat/rh-php72-php<0:7.2.24-1.el7
0:7.2.24-1.el7
redhat/php<5.6.39
5.6.39
redhat/php<7.0.33
7.0.33
redhat/php<7.1.25
7.1.25
redhat/php<7.2.13
7.2.13
redhat/php<7.3.0
7.3.0
debian/php5
debian/php7.0
debian/php7.3
PHP PHP<7.0.33
7.0.33
PHP PHP<5.6.39
PHP PHP>=7.0.0<7.0.33
PHP PHP>=7.1.0<7.1.25
PHP PHP>=7.2.0<7.2.13
openSUSE Leap=42.3

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/rh-php71-php to a version that resolves this vulnerability.

    Fixed in 0:7.1.30-1.el7
  2. Upgrade

    Upgrade redhat/rh-php72-php to a version that resolves this vulnerability.

    Fixed in 0:7.2.24-1.el7
  3. Upgrade

    Upgrade redhat/php to a version that resolves this vulnerability.

    Fixed in 5.6.39
  4. Upgrade

    Upgrade redhat/php to a version that resolves this vulnerability.

    Fixed in 7.0.33
  5. Upgrade

    Upgrade redhat/php to a version that resolves this vulnerability.

    Fixed in 7.1.25
  6. Upgrade

    Upgrade redhat/php to a version that resolves this vulnerability.

    Fixed in 7.2.13
  7. Upgrade

    Upgrade redhat/php to a version that resolves this vulnerability.

    Fixed in 7.3.0
  8. Upgrade

    Upgrade PHP to a version that resolves this vulnerability.

    Fixed in 7.0.33
  9. Upgrade

    Upgrade PHP to a version that resolves this vulnerability.

    Fixed in 5.6.39
  10. Upgrade

    Upgrade PHP to a version that resolves this vulnerability.

    Fixed in 7.1.25
  11. Upgrade

    Upgrade PHP to a version that resolves this vulnerability.

    Fixed in 7.2.13

Event History

Nov 12, 2018
CVE Published
12:00 AM
Feb 21, 2019
CVE Published
via MITRE·07:00 PM
Data Sourced
via MITRE·07:00 PM
Description
Data Sourced
via NVD·07:29 PM
DescriptionSeverityWeaknessAffected Software
Jan 11, 2024
Data Sourced
via Launchpad·11:00 PM
Description
Feb 19, 2026
Data Sourced
via Ubuntu·04:05 PM
RemedyDescriptionSeverityAffected Software
Apr 28, 2026
Data Sourced
via Debian·04:58 PM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is CVE-2018-20783?

CVE-2018-20783 is a fixed bug that involves a heap buffer overflow in the phar_parse_pharfile function in PHP.

2

How does CVE-2018-20783 affect PHP?

CVE-2018-20783 affects PHP versions before 5.6.39, 7.x before 7.0.33, 7.1.x before 7.1.25, and 7.2.x before 7.2.13.

3

What is the severity of CVE-2018-20783?

The severity of CVE-2018-20783 is high, with a severity score of 7.5.

4

How can I fix CVE-2018-20783?

To fix CVE-2018-20783, upgrade PHP to version 5.6.39, 7.0.33, 7.1.25, or 7.2.13.

5

Where can I find more information about CVE-2018-20783?

You can find more information about CVE-2018-20783 at the following references: [link 1](https://bugs.php.net/bug.php?id=77143), [link 2](http://git.php.net/?p=php-src.git;a=commitdiff;h=e7c8e6cde021afd637ea535b0641a1851e57fb2a), [link 3](https://access.redhat.com/errata/RHSA-2019:2519).

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