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

Debian LTS Advisory DLA-3345-1                debian-lts@lists.debian.org
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.


    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: https://wiki.debian.org/LTS

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