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Secunia Security Advisory 40121

Secunia Security Advisory 40121
Posted Jun 11, 2010
Authored by Secunia | Site secunia.com

Secunia Security Advisory - Debian has issued an update for glibc and eglibc. This fixes some weaknesses and vulnerabilities, which can be exploited by malicious, local users to cause a DoS (Denial of Service) and potentially gain escalated privileges and by malicious people to potentially compromise a vulnerable system.

tags | advisory, denial of service, local, vulnerability
systems | linux, debian
SHA-256 | 0905a3d7ea7e9f72e1fcdab1f1f36f3c1e3c93420c38331869a0dd630489536e

Secunia Security Advisory 40121

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TITLE:
Debian update for glibc and eglibc

SECUNIA ADVISORY ID:
SA40121

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/40121/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=40121

RELEASE DATE:
2010-06-10

DISCUSS ADVISORY:
http://secunia.com/advisories/40121/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
* Last Update
* Popularity
* Comments
* Criticality Level
* Impact
* Where
* Solution Status
* Operating System / Software
* CVE Reference(s)

http://secunia.com/advisories/40121/

ONLY AVAILABLE IN CUSTOMER AREA:
* Authentication Level
* Report Reliability
* Secunia PoC
* Secunia Analysis
* Systems Affected
* Approve Distribution
* Remediation Status
* Secunia CVSS Score
* CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=40121

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
* AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
Debian has issued an update for glibc and eglibc. This fixes some
weaknesses and vulnerabilities, which can be exploited by malicious,
local users to cause a DoS (Denial of Service) and potentially gain
escalated privileges and by malicious people to potentially
compromise a vulnerable system.

1) Integer overflows in the libc "strfmon()" function can be
exploited to cause a crash or potentially execute arbitrary code via
specially crafted format specifiers.

2) The mntent function family does not correctly handle newlines
characters. This can be exploited to e.g. cause a DoS or gain
escalated privileges, but requires that an attacker can inject
newline characters into a mount entry (e.g. via vulnerable mount
helpers).

3) A signedness error when processing certain ELF headers can be
exploited to e.g. execute arbitrary code via a specially crafted ELF
file.

SOLUTION:
Apply updated packages.

Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

PROVIDED AND/OR DISCOVERED BY:
The vendor credits:
1) Maksymilian Arciemowicz
2) Jeff Layton and Dan Rosenberg
3) Dan Rosenberg

ORIGINAL ADVISORY:
DSA-2058-1:
http://lists.debian.org/debian-security-announce/2010/msg00101.html

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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