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amazonAmazonALAS2-2023-2063
HistoryMay 25, 2023 - 5:41 p.m.

Important: squid

2023-05-2517:41:00
alas.aws.amazon.com
6

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.7 High

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.005 Low

EPSS

Percentile

75.4%

Issue Overview:

An issue was discovered in Squid before 4.12 and 5.x before 5.0.3. Due to use of a potentially dangerous function, Squid and the default certificate validation helper are vulnerable to a Denial of Service when opening a TLS connection to an attacker-controlled server for HTTPS. This occurs because unrecognized error values are mapped to NULL, but later code expects that each error value is mapped to a valid error string. (CVE-2020-14058)

Affected Packages:

squid

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

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

New Packages:

aarch64:  
    squid-3.5.20-17.amzn2.7.3.aarch64  
    squid-sysvinit-3.5.20-17.amzn2.7.3.aarch64  
    squid-migration-script-3.5.20-17.amzn2.7.3.aarch64  
    squid-debuginfo-3.5.20-17.amzn2.7.3.aarch64  
  
i686:  
    squid-3.5.20-17.amzn2.7.3.i686  
    squid-sysvinit-3.5.20-17.amzn2.7.3.i686  
    squid-migration-script-3.5.20-17.amzn2.7.3.i686  
    squid-debuginfo-3.5.20-17.amzn2.7.3.i686  
  
src:  
    squid-3.5.20-17.amzn2.7.3.src  
  
x86_64:  
    squid-3.5.20-17.amzn2.7.3.x86_64  
    squid-sysvinit-3.5.20-17.amzn2.7.3.x86_64  
    squid-migration-script-3.5.20-17.amzn2.7.3.x86_64  
    squid-debuginfo-3.5.20-17.amzn2.7.3.x86_64  

Additional References

Red Hat: CVE-2020-14058

Mitre: CVE-2020-14058

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.7 High

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.005 Low

EPSS

Percentile

75.4%

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