Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 3 |
CVE-ID | CVE-2020-12100 CVE-2020-12673 CVE-2020-12674 |
CWE-ID | CWE-835 CWE-125 CWE-20 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Amazon Linux AMI Operating systems & Components / Operating system |
Vendor | Amazon Web Services |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
EUVDB-ID: #VU45671
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-12100
CWE-ID:
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop in submission, lmtp, and lda when processing e-mail message with deeply nested MIME parts. A remote attacker can send a specially crafted email to consume all available system resources and cause denial of service conditions.
MitigationUpdate the affected packages:
i686:Vulnerable software versions
dovecot-devel-2.2.36-6.21.amzn1.i686
dovecot-pgsql-2.2.36-6.21.amzn1.i686
dovecot-mysql-2.2.36-6.21.amzn1.i686
dovecot-2.2.36-6.21.amzn1.i686
dovecot-debuginfo-2.2.36-6.21.amzn1.i686
dovecot-pigeonhole-2.2.36-6.21.amzn1.i686
src:
dovecot-2.2.36-6.21.amzn1.src
x86_64:
dovecot-pgsql-2.2.36-6.21.amzn1.x86_64
dovecot-mysql-2.2.36-6.21.amzn1.x86_64
dovecot-devel-2.2.36-6.21.amzn1.x86_64
dovecot-pigeonhole-2.2.36-6.21.amzn1.x86_64
dovecot-debuginfo-2.2.36-6.21.amzn1.x86_64
dovecot-2.2.36-6.21.amzn1.x86_64
Amazon Linux AMI: All versions
External linkshttp://alas.aws.amazon.com/ALAS-2020-1435.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.
EUVDB-ID: #VU45672
Risk: Medium
CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-12673
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition when processing NTLM requests. A remote attacker can send a specially formatted NTLM reques, trigger out-of-bounds read error and crash the auth service.
Update the affected packages:
i686:Vulnerable software versions
dovecot-devel-2.2.36-6.21.amzn1.i686
dovecot-pgsql-2.2.36-6.21.amzn1.i686
dovecot-mysql-2.2.36-6.21.amzn1.i686
dovecot-2.2.36-6.21.amzn1.i686
dovecot-debuginfo-2.2.36-6.21.amzn1.i686
dovecot-pigeonhole-2.2.36-6.21.amzn1.i686
src:
dovecot-2.2.36-6.21.amzn1.src
x86_64:
dovecot-pgsql-2.2.36-6.21.amzn1.x86_64
dovecot-mysql-2.2.36-6.21.amzn1.x86_64
dovecot-devel-2.2.36-6.21.amzn1.x86_64
dovecot-pigeonhole-2.2.36-6.21.amzn1.x86_64
dovecot-debuginfo-2.2.36-6.21.amzn1.x86_64
dovecot-2.2.36-6.21.amzn1.x86_64
Amazon Linux AMI: All versions
External linkshttp://alas.aws.amazon.com/ALAS-2020-1435.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.
EUVDB-ID: #VU45673
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-12674
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in RPA requests. A remote attacker can send a specially formatted 0-lenght RPA request and crash the auth service.
Update the affected packages:
i686:Vulnerable software versions
dovecot-devel-2.2.36-6.21.amzn1.i686
dovecot-pgsql-2.2.36-6.21.amzn1.i686
dovecot-mysql-2.2.36-6.21.amzn1.i686
dovecot-2.2.36-6.21.amzn1.i686
dovecot-debuginfo-2.2.36-6.21.amzn1.i686
dovecot-pigeonhole-2.2.36-6.21.amzn1.i686
src:
dovecot-2.2.36-6.21.amzn1.src
x86_64:
dovecot-pgsql-2.2.36-6.21.amzn1.x86_64
dovecot-mysql-2.2.36-6.21.amzn1.x86_64
dovecot-devel-2.2.36-6.21.amzn1.x86_64
dovecot-pigeonhole-2.2.36-6.21.amzn1.x86_64
dovecot-debuginfo-2.2.36-6.21.amzn1.x86_64
dovecot-2.2.36-6.21.amzn1.x86_64
Amazon Linux AMI: All versions
External linkshttp://alas.aws.amazon.com/ALAS-2020-1435.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.