#VU110123 Input validation error in Glibc - CVE-2010-0296

Vulnerability identifier: #VU110123

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2010-0296

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Glibc
Universal components / Libraries / Libraries used by multiple products

Vendor: GNU

Description

The vulnerability allows a local user to execute arbitrary code.

The encode_name macro in misc/mntent_r.c in the GNU C Library (aka glibc or libc6) 2.11.1 and earlier, as used by ncpmount and mount.cifs, does not properly handle newline characters in mountpoint names, which allows local users to cause a denial of service (mtab corruption), or possibly modify mount options and gain privileges, via a crafted mount request.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Glibc: 0.1 - 2.11.1

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External links
https://www.ubuntu.com/usn/USN-944-1
https://bugzilla.redhat.com/show_bug.cgi?id=559579
https://secunia.com/advisories/39900
https://frugalware.org/security/662
https://www.vupen.com/english/advisories/2010/1246
https://securitytracker.com/id?1024043
https://www.mandriva.com/security/advisories?name=MDVSA-2010:112
https://www.mandriva.com/security/advisories?name=MDVSA-2010:111
https://www.debian.org/security/2010/dsa-2058
https://security.gentoo.org/glsa/glsa-201011-01.xml
https://secunia.com/advisories/43830
https://www.redhat.com/support/errata/RHSA-2011-0412.html
https://www.vupen.com/english/advisories/2011/0863
https://secunia.com/advisories/46397
https://www.vmware.com/security/advisories/VMSA-2011-0012.html
https://lists.opensuse.org/opensuse-security-announce/2010-10/msg00007.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/59240
https://www.securityfocus.com/archive/1/520102/100/0/threaded
https://seclists.org/fulldisclosure/2019/Jun/18
https://seclists.org/bugtraq/2019/Jun/14
https://packetstormsecurity.com/files/153278/WAGO-852-Industrial-Managed-Switch-Series-Code-Execution-Hardcoded-Credentials.html
https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=ab00f4eac8f4932211259ff87be83144f5211540

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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