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amazonAmazonALAS-2022-1649
HistoryDec 01, 2022 - 5:34 p.m.

Important: libksba

2022-12-0117:34:00
alas.aws.amazon.com
12
libksba
vulnerability
integer overflow
crl parser
remote code execution
yum update

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.005

Percentile

77.1%

Issue Overview:

A vulnerability was found in the Libksba library due to an integer overflow within the CRL parser. The vulnerability can be exploited remotely for code execution on the target system by passing specially crafted data to the application, for example, a malicious S/MIME attachment. (CVE-2022-3515)

Affected Packages:

libksba

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

New Packages:

i686:  
    libksba-1.3.5-1.10.amzn1.i686  
    libksba-devel-1.3.5-1.10.amzn1.i686  
    libksba-debuginfo-1.3.5-1.10.amzn1.i686  
  
src:  
    libksba-1.3.5-1.10.amzn1.src  
  
x86_64:  
    libksba-1.3.5-1.10.amzn1.x86_64  
    libksba-debuginfo-1.3.5-1.10.amzn1.x86_64  
    libksba-devel-1.3.5-1.10.amzn1.x86_64  

Additional References

Red Hat: CVE-2022-3515

Mitre: CVE-2022-3515

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.005

Percentile

77.1%