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amazonAmazonALAS-2016-735
HistoryAug 17, 2016 - 1:30 p.m.

Medium: squid

2016-08-1713:30:00
alas.aws.amazon.com
17

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.017 Low

EPSS

Percentile

87.5%

Issue Overview:

A buffer overflow flaw was found in the way the Squid cachemgr.cgi utility processed remotely relayed Squid input. When the CGI interface utility is used, a remote attacker could possibly use this flaw to execute arbitrary code. (CVE-2016-4051)

It was found that the fix for CVE-2016-4051 did not properly prevent the stack overflow in the munge_other_line() function. A remote attacker could send specially crafted data to the Squid proxy, which would exploit the cachemgr CGI utility, possibly triggering execution of arbitrary code. (CVE-2016-5408)

Affected Packages:

squid

Issue Correction:
Run yum update squid to update your system.

New Packages:

i686:  
    squid-3.1.23-16.22.amzn1.i686  
    squid-debuginfo-3.1.23-16.22.amzn1.i686  
  
src:  
    squid-3.1.23-16.22.amzn1.src  
  
x86_64:  
    squid-debuginfo-3.1.23-16.22.amzn1.x86_64  
    squid-3.1.23-16.22.amzn1.x86_64  

Additional References

Red Hat: CVE-2016-4051, CVE-2016-5408

Mitre: CVE-2016-4051, CVE-2016-5408

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.017 Low

EPSS

Percentile

87.5%