Multiple vulnerabilities in GNU Glibc



| Updated: 2020-08-11
Risk High
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2011-1095
CVE-2010-3847
CVE-2010-3856
CWE-ID CWE-264
CWE-59
Exploitation vector Network
Public exploit Public exploit code for vulnerability #2 is available.
Public exploit code for vulnerability #3 is available.
Vulnerable software
 Glibc
Universal components / Libraries / Libraries used by multiple products

Vendor GNU

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU45137

Risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2011-1095

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

locale/programs/locale.c in locale in the GNU C Library (aka glibc or libc6) before 2.13 does not quote its output, which might allow local users to gain privileges via a crafted localization environment variable, in conjunction with a program that executes a script that uses the eval function.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Glibc: 1.00 - 2.12.1

CPE2.3 External links

https://bugs.gentoo.org/show_bug.cgi?id=330923
https://openwall.com/lists/oss-security/2011/03/08/21
https://openwall.com/lists/oss-security/2011/03/08/22
https://openwall.com/lists/oss-security/2011/03/08/8
https://secunia.com/advisories/43830
https://secunia.com/advisories/43976
https://secunia.com/advisories/43989
https://secunia.com/advisories/46397
https://security.gentoo.org/glsa/glsa-201011-01.xml
https://securitytracker.com/id?1025286
https://sources.redhat.com/bugzilla/show_bug.cgi?id=11904
https://sourceware.org/bugzilla/show_bug.cgi?id=11904
https://sourceware.org/git/?p=glibc.git;a=patch;h=026373745eab50a683536d950cb7e17dc98c4259
https://www.mandriva.com/security/advisories?name=MDVSA-2011:178
https://www.redhat.com/support/errata/RHSA-2011-0412.html
https://www.redhat.com/support/errata/RHSA-2011-0413.html
https://www.securityfocus.com/archive/1/520102/100/0/threaded
https://www.vmware.com/security/advisories/VMSA-2011-0012.html
https://www.vupen.com/english/advisories/2011/0863
https://bugzilla.redhat.com/show_bug.cgi?id=625893
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12272


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Link following

EUVDB-ID: #VU45488

Risk: High

CVSSv4.0: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2010-3847

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Exploit availability: Yes

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

elf/dl-load.c in ld.so in the GNU C Library (aka glibc or libc6) through 2.11.2, and 2.12.x through 2.12.1, does not properly handle a value of $ORIGIN for the LD_AUDIT environment variable, which allows local users to gain privileges via a crafted dynamic shared object (DSO) located in an arbitrary directory.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Glibc: 1.00 - 2.12.1

CPE2.3 External links

https://seclists.org/fulldisclosure/2010/Oct/257
https://seclists.org/fulldisclosure/2010/Oct/292
https://seclists.org/fulldisclosure/2010/Oct/294
https://secunia.com/advisories/42787
https://security.gentoo.org/glsa/glsa-201011-01.xml
https://sourceware.org/ml/libc-hacker/2010-10/msg00007.html
https://support.avaya.com/css/P8/documents/100120941
https://www.debian.org/security/2010/dsa-2122
https://www.kb.cert.org/vuls/id/537223
https://www.mandriva.com/security/advisories?name=MDVSA-2010:207
https://www.redhat.com/support/errata/RHSA-2010-0872.html
https://www.securityfocus.com/archive/1/515545/100/0/threaded
https://www.securityfocus.com/bid/44154
https://www.ubuntu.com/usn/USN-1009-1
https://www.vmware.com/security/advisories/VMSA-2011-0001.html
https://www.vupen.com/english/advisories/2011/0025
https://bugzilla.redhat.com/show_bug.cgi?id=643306
https://lists.opensuse.org/opensuse-security-announce/2010-10/msg00007.html
https://rhn.redhat.com/errata/RHSA-2010-0787.html
https://www.exploit-db.com/exploits/44024/
https://www.exploit-db.com/exploits/44025/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.

3) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU45489

Risk: High

CVSSv4.0: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]

CVE-ID: CVE-2010-3856

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

ld.so in the GNU C Library (aka glibc or libc6) before 2.11.3, and 2.12.x before 2.12.2, does not properly restrict use of the LD_AUDIT environment variable to reference dynamic shared objects (DSOs) as audit objects, which allows local users to gain privileges by leveraging an unsafe DSO located in a trusted library directory, as demonstrated by libpcprofile.so.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Glibc: 1.00 - 2.12.1

CPE2.3 External links

https://packetstormsecurity.com/files/153278/WAGO-852-Industrial-Managed-Switch-Series-Code-Execution-Hardcoded-Credentials.html
https://seclists.org/fulldisclosure/2010/Oct/344
https://seclists.org/fulldisclosure/2019/Jun/18
https://secunia.com/advisories/42787
https://security.gentoo.org/glsa/glsa-201011-01.xml
https://sourceware.org/ml/libc-hacker/2010-10/msg00010.html
https://support.avaya.com/css/P8/documents/100121017
https://www.debian.org/security/2010/dsa-2122
https://www.mandriva.com/security/advisories?name=MDVSA-2010:212
https://www.redhat.com/support/errata/RHSA-2010-0872.html
https://www.securityfocus.com/archive/1/515545/100/0/threaded
https://www.securityfocus.com/bid/44347
https://www.ubuntu.com/usn/USN-1009-1
https://www.vmware.com/security/advisories/VMSA-2011-0001.html
https://www.vupen.com/english/advisories/2011/0025
https://bugzilla.redhat.com/show_bug.cgi?id=645672
https://lists.opensuse.org/opensuse-security-announce/2010-10/msg00007.html
https://rhn.redhat.com/errata/RHSA-2010-0793.html
https://seclists.org/bugtraq/2019/Jun/14
https://www.exploit-db.com/exploits/44025/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.



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