Amazon Linux AMI update for rubygem-nokogiri

1) Input validation error

EUVDB-ID: #VU69583

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-29181

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input passed into the XML and HTML4 SAX parsers. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected packages:

i686:
    rubygem21-nokogiri-1.6.1-1.23.amzn1.i686
    rubygem21-nokogiri-doc-1.6.1-1.23.amzn1.i686
    rubygem20-nokogiri-1.6.1-1.23.amzn1.i686
    rubygem22-nokogiri-1.6.1-1.23.amzn1.i686
    rubygem20-nokogiri-doc-1.6.1-1.23.amzn1.i686
    rubygem22-nokogiri-doc-1.6.1-1.23.amzn1.i686
    rubygem-nokogiri-debuginfo-1.6.1-1.23.amzn1.i686

src:
    rubygem-nokogiri-1.6.1-1.23.amzn1.src

x86_64:
    rubygem22-nokogiri-1.6.1-1.23.amzn1.x86_64
    rubygem20-nokogiri-doc-1.6.1-1.23.amzn1.x86_64
    rubygem21-nokogiri-doc-1.6.1-1.23.amzn1.x86_64
    rubygem22-nokogiri-doc-1.6.1-1.23.amzn1.x86_64
    rubygem20-nokogiri-1.6.1-1.23.amzn1.x86_64
    rubygem21-nokogiri-1.6.1-1.23.amzn1.x86_64
    rubygem-nokogiri-debuginfo-1.6.1-1.23.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

rubygem-nokogiri: before 1.6.1-1.23

CPE2.3

• cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*
• cpe:2.3:o:amazon_web_services:rubygem-nokogiri:*:*:*:*:*:amazon_linux_ami:*:*

External links

https://alas.aws.amazon.com/ALAS-2022-1648.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.