Debian 10026 Published by

A php7.3 security update has been released for Debian GNU/Linux 10 LTS to address multiple security issues.

DLA 3345-1: php7.3 security update

Debian LTS Advisory DLA-3345-1 Guilhem Moulin
February 26, 2023

Package : php7.3
Version : 7.3.31-1~deb10u3
CVE ID : CVE-2022-31631 CVE-2023-0567 CVE-2023-0568 CVE-2023-0662
Debian Bug : 1031368

Multiple security issues were found in PHP, a widely-used open source
general purpose scripting language, which could result in denial of
service or incorrect validation of BCrypt hashes.


Due to an uncaught integer overflow, `PDO::quote()` of PDO_SQLite
may return an improperly quoted string. The exact details likely
depend on the implementation of `sqlite3_snprintf()`, but with some
versions it is possible to force the function to return a single
apostrophe, if the function is called on user supplied input without
any length restrictions in place.


Tim Düsterhus discovered that malformed BCrypt hashes that include a
`$` within their salt part trigger a buffer overread and may
erroneously validate any password as valid. (`Password_verify()`
always return `true` with such inputs.)


1-byte array overrun when appending slash to paths during path


Jakob Ackermann discovered a Denial of Service vulnerability when
parsing multipart request body: the request body parsing in PHP
allows any unauthenticated attacker to consume a large amount of CPU
time and trigger excessive logging.

For Debian 10 buster, these problems have been fixed in version

We recommend that you upgrade your php7.3 packages.

For the detailed security status of php7.3 please refer to
its security tracker page at:

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: