Vulnerability Assessment & Network Security Forums



If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important.  If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.


Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200410-15] Squid: Remote DoS vulnerability


Vulnerability Assessment Details

[GLSA-200410-15] Squid: Remote DoS vulnerability

Vulnerability Assessment Summary
Squid: Remote DoS vulnerability

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200410-15
(Squid: Remote DoS vulnerability)


A parsing error exists in the SNMP module of Squid where a
specially-crafted UDP packet can potentially cause the server to restart,
closing all current connections. This vulnerability only exists in versions
of Squid compiled with the 'snmp' USE flag.

Impact

A possible hacker can repeatedly send these malicious UDP packets to the Squid
server, leading to a denial of service.

Workaround

Disable SNMP support or filter the port that has SNMP processing (default
is 3401) to permit only SNMP data from trusted hosts.
To disable SNMP support put the entry snmp_port 0 in the squid.conf
configuration file.
To permit only the local interface to process SNMP, add the entry
"snmp_incoming_address 127.0.0.1" in the squid.conf configuration file.

References:
http://www.idefense.com/application/poi/display?id=152&type=vulnerabilities&flashstatus=true


Solution:
All Squid users should upgrade to the latest version:
# emerge sync
# emerge -pv ">=www-proxy/squid-2.5.7"
# emerge ">=www-proxy/squid-2.5.7"


Network Security Threat Level: Medium


Networks Security ID:

Vulnerability Assessment Copyright: (C) 2005 Michel Arboi

Cables, Connectors

Lenovo L412, Intel Core i5 M 520, 4GB RAM, No HDD #273
$9.99
Lenovo L412, Intel Core i5 M 520, 4GB RAM, No HDD #273 pictureLot of 72 Genuine Lenovo 90W 20V 2.5A OEM Laptop AC Adapter Charger
$299.99
Lot of 72 Genuine Lenovo 90W 20V 2.5A OEM Laptop AC Adapter Charger pictureLenovo ThinkCentre M810z 10NY000WUS All-in-One Computer - Intel Core i7 (6th
$1072.48
Lenovo ThinkCentre M810z 10NY000WUS All-in-One Computer - Intel Core i7 (6th picture IBM Original 23R5841 TS3100 TS3200 3362-2LX Terminator Ultra2 LVD LVD/SE
$49.0
 IBM Original 23R5841 TS3100 TS3200 3362-2LX Terminator Ultra2 LVD LVD/SE  picture


Discussions

No Discussions have been posted on this vulnerability.