[SECURITY] [DLA 3345-1] php7.3 security update

Debian LTS Advisory DLA-3345-1 [email protected]
https://www.debian.org/lts/security/ Guilhem Moulin
February 26, 2023 https://wiki.debian.org/LTS

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.

CVE-2022-31631

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.

CVE-2023-0567

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.)

CVE-2023-0568

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

CVE-2023-0662

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
7.3.31-1~deb10u3.

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:
https://security-tracker.debian.org/tracker/php7.3

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