Debian LTS: DLA-3345-1: php7.3 security update
Summary
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/source-package/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
