CVE-2018-20783
In PHP 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, a buffer over-read in PHAR reading functions may allow an attacker to read allocated or unallocated memory past the actual data when trying to parse a .phar file.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.66%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In PHP 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, a buffer over-read in PHAR reading functions may allow an attacker to read allocated or unallocated memory past the actual data when trying to parse a .phar file. This is related to phar_parse_pharfile in ext/phar/phar.c.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 5.66% probability · 93th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- php/php · opensuse/leap
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00083.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00104.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00041.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00044.html
- http://php.net/ChangeLog-5.phpVendor Advisory
- http://php.net/ChangeLog-7.phpVendor Advisory
- https://access.redhat.com/errata/RHSA-2019:2519
- https://access.redhat.com/errata/RHSA-2019:3299
- https://bugs.php.net/bug.php?id=77143Exploit, Issue Tracking, Vendor Advisory
- https://usn.ubuntu.com/3566-2/
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00083.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00104.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00041.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00044.html
- http://php.net/ChangeLog-5.phpVendor Advisory
- http://php.net/ChangeLog-7.phpVendor Advisory
- https://access.redhat.com/errata/RHSA-2019:2519
- https://access.redhat.com/errata/RHSA-2019:3299
- https://bugs.php.net/bug.php?id=77143Exploit, Issue Tracking, Vendor Advisory
- https://usn.ubuntu.com/3566-2/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.