Amazon Linux AMI update for spamassassin



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2018-11805
CVE-2019-12420
CWE-ID CWE-78
CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Amazon Linux AMI
Operating systems & Components / Operating system

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) OS Command Injection

EUVDB-ID: #VU23601

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-11805

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary shell commands on the target system.

The vulnerability exists due to nefarious CF files can be configured to run system commands without any output. A local user can inject arbitrary commands into nefarious CF files and compromise the system or execute arbitrary code with elevated privileges.

Mitigation

Update the affected packages:

i686:
    spamassassin-3.4.3-2.2.amzn1.i686
    spamassassin-debuginfo-3.4.3-2.2.amzn1.i686

src:
    spamassassin-3.4.3-2.2.amzn1.src

x86_64:
    spamassassin-3.4.3-2.2.amzn1.x86_64
    spamassassin-debuginfo-3.4.3-2.2.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3 External links

https://alas.aws.amazon.com/ALAS-2020-1341.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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

2) Input validation error

EUVDB-ID: #VU23600

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-2019-12420

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 when parsing multipart email messages. A remote attacker can send a specially crafted email message and consume all available resources on the system.

Mitigation

Update the affected packages:

i686:
    spamassassin-3.4.3-2.2.amzn1.i686
    spamassassin-debuginfo-3.4.3-2.2.amzn1.i686

src:
    spamassassin-3.4.3-2.2.amzn1.src

x86_64:
    spamassassin-3.4.3-2.2.amzn1.x86_64
    spamassassin-debuginfo-3.4.3-2.2.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3 External links

https://alas.aws.amazon.com/ALAS-2020-1341.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.



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