CVE-2019-9675
HIGH severity · CVSS 8.1 · Memory corruption
8.1CVSS HIGH
Summary
An issue was discovered in PHP 7.x before 7.1.27 and 7.3.x before 7.3.3. phar_tar_writeheaders_int in ext/phar/tar.c has a buffer overflow via a long link value. NOTE: The vendor indicates that the link value is used only when an archive contains a symlink, which currently cannot happen: "This issue allows theoretical compromise of security, but a practical attack is usually impossible.
Impact & exploitability
Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://bugs.php.net/bug.php?id=77586 ↗
Additional information
- NVD record
- https://bugs.php.net/bug.php?id=77586Patch
- http://php.net/ChangeLog-7.phpAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00104.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00012.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00041.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00044.html
- https://usn.ubuntu.com/3922-2/Advisory
- https://usn.ubuntu.com/3922-3/Advisory