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DebianDEBIAN:DSA-4993-1:C2842

HistoryOct 25, 2021 - 8:25 p.m.

[SECURITY] [DSA 4993-1] php7.3 security update

2021-10-2520:25:37

lists.debian.org

CVSS2

6.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:C/I:C/A:C

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

AI Score

7.6

Confidence

High

EPSS

0.001

Percentile

51.0%

JSON

Debian Security Advisory DSA-4993-1 [email protected]
https://www.debian.org/security/ Salvatore Bonaccorso
October 25, 2021 https://www.debian.org/security/faq

Package : php7.3
CVE ID : CVE-2021-21703

An out-of-bounds read and write flaw was discovered in the PHP-FPM code,
which could result in escalation of privileges from local unprivileged
user to the root user.

For the oldstable distribution (buster), this problem has been fixed
in version 7.3.31-1~deb10u1.

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 Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: [email protected]

OSVersionArchitecturePackageVersionFilename
Debian9armhflibphp7.0-embed< 7.0.33-0+deb9u12libphp7.0-embed_7.0.33-0+deb9u12_armhf.deb
Debian10armelphp7.3-gd-dbgsym< 7.3.31-1~deb10u1php7.3-gd-dbgsym_7.3.31-1~deb10u1_armel.deb
Debian10i386php7.3-json-dbgsym< 7.3.31-1~deb10u1php7.3-json-dbgsym_7.3.31-1~deb10u1_i386.deb
Debian9i386php7.0-gd< 7.0.33-0+deb9u12php7.0-gd_7.0.33-0+deb9u12_i386.deb
Debian10mipsphp7.3-interbase< 7.3.31-1~deb10u1php7.3-interbase_7.3.31-1~deb10u1_mips.deb
Debian10mipselphp7.3-mysql< 7.3.31-1~deb10u1php7.3-mysql_7.3.31-1~deb10u1_mipsel.deb
Debian10ppc64elphp7.3-sybase-dbgsym< 7.3.31-1~deb10u1php7.3-sybase-dbgsym_7.3.31-1~deb10u1_ppc64el.deb
Debian10ppc64elphp7.3-fpm< 7.3.31-1~deb10u1php7.3-fpm_7.3.31-1~deb10u1_ppc64el.deb
Debian11mipselphp7.4-odbc< 7.4.25-1+deb11u1php7.4-odbc_7.4.25-1+deb11u1_mipsel.deb
Debian10armhfphp7.3-ldap-dbgsym< 7.3.31-1~deb10u1php7.3-ldap-dbgsym_7.3.31-1~deb10u1_armhf.deb

OS	Version	Architecture	Package	Version	Filename
Debian	9	armhf	libphp7.0-embed	< 7.0.33-0+deb9u12	libphp7.0-embed_7.0.33-0+deb9u12_armhf.deb
Debian	10	armel	php7.3-gd-dbgsym	< 7.3.31-1~deb10u1	php7.3-gd-dbgsym_7.3.31-1~deb10u1_armel.deb
Debian	10	i386	php7.3-json-dbgsym	< 7.3.31-1~deb10u1	php7.3-json-dbgsym_7.3.31-1~deb10u1_i386.deb
Debian	9	i386	php7.0-gd	< 7.0.33-0+deb9u12	php7.0-gd_7.0.33-0+deb9u12_i386.deb
Debian	10	mips	php7.3-interbase	< 7.3.31-1~deb10u1	php7.3-interbase_7.3.31-1~deb10u1_mips.deb
Debian	10	mipsel	php7.3-mysql	< 7.3.31-1~deb10u1	php7.3-mysql_7.3.31-1~deb10u1_mipsel.deb
Debian	10	ppc64el	php7.3-sybase-dbgsym	< 7.3.31-1~deb10u1	php7.3-sybase-dbgsym_7.3.31-1~deb10u1_ppc64el.deb
Debian	10	ppc64el	php7.3-fpm	< 7.3.31-1~deb10u1	php7.3-fpm_7.3.31-1~deb10u1_ppc64el.deb
Debian	11	mipsel	php7.4-odbc	< 7.4.25-1+deb11u1	php7.4-odbc_7.4.25-1+deb11u1_mipsel.deb
Debian	10	armhf	php7.3-ldap-dbgsym	< 7.3.31-1~deb10u1	php7.3-ldap-dbgsym_7.3.31-1~deb10u1_armhf.deb