php7.0: CVE-2017-8923: Overflowing the length of string causes crash

Debian Bug report logs - #881538
php7.0: CVE-2017-8923: Overflowing the length of string causes crash

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: php7.0: CVE-2017-8923: Overflowing the length of string causes crash

Date: Sun, 12 Nov 2017 22:33:46 +0100

Source: php7.0
Version: 7.0.19-1
Severity: important
Tags: security upstream
Forwarded: https://bugs.php.net/bug.php?id=74577
Control: clone -1 -2
Control: reassign -2 src:php7.1 7.1.8-1
Control: retitle -2 php7.1: CVE-2017-8923: Overflowing the length of string causes crash

Hi,

the following vulnerability was published for php7.0 and php7.1.

CVE-2017-8923[0]:
| The zend_string_extend function in Zend/zend_string.h in PHP through
| 7.1.5 does not prevent changes to string objects that result in a
| negative length, which allows remote attackers to cause a denial of
| service (application crash) or possibly have unspecified other impact
| by leveraging a script's use of .= with a long string.

Attached to [1] and [2] are POCs to demostrate the issue (verified on
i386 sid).

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2017-8923
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8923
[1] https://bugs.php.net/bug.php?id=74577
[2] https://bugs.php.net/bug.php?id=73122

Regards,
Salvatore

Message #12 received at 881538-done@bugs.debian.org (full text, mbox, reply):

From: Debian FTP Masters <ftpmaster@ftp-master.debian.org>

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Cc: php7.0@packages.debian.org

Subject: Bug#910071: Removed package(s) from unstable

Date: Mon, 08 Oct 2018 18:56:55 +0000

Version: 7.0.32-1+rm

Dear submitter,

as the package php7.0 has just been removed from the Debian archive
unstable we hereby close the associated bug reports.  We are sorry
that we couldn't deal with your issue properly.

For details on the removal, please see https://bugs.debian.org/910071

The version of this package that was in Debian prior to this removal
can still be found using http://snapshot.debian.org/.

This message was generated automatically; if you believe that there is
a problem with it please contact the archive administrators by mailing
ftpmaster@ftp-master.debian.org.

Debian distribution maintenance software
pp.
Ansgar Burchardt (the ftpmaster behind the curtain)

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