Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 2 |
CVE-ID | CVE-2022-46663 CVE-2022-48624 |
CWE-ID | CWE-20 CWE-78 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Amazon Linux AMI Operating systems & Components / Operating system less Operating systems & Components / Operating system package or component |
Vendor | Amazon Web Services |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
EUVDB-ID: #VU72127
Risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-46663
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 the ANSI escape sequences in the "less -R" output. A remote attacker can trick the victim to run the command against the specially crafted data and perform a denial of service (DoS) attack.
Update the affected packages:
aarch64:Vulnerable software versions
less-debuginfo-608-2.amzn2023.0.1.aarch64
less-608-2.amzn2023.0.1.aarch64
less-debugsource-608-2.amzn2023.0.1.aarch64
src:
less-608-2.amzn2023.0.1.src
x86_64:
less-debuginfo-608-2.amzn2023.0.1.x86_64
less-debugsource-608-2.amzn2023.0.1.x86_64
less-608-2.amzn2023.0.1.x86_64
Amazon Linux AMI: All versions
less: before 608-2
External linkshttp://alas.aws.amazon.com/AL2023/ALAS-2023-123.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: #VU86885
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-48624
CWE-ID:
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation within the close_altfile() function in filename.c. A remote attacker can trick the victim into using a specially crafted argument for the less command and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationUpdate the affected packages:
aarch64:Vulnerable software versions
less-debuginfo-608-2.amzn2023.0.1.aarch64
less-608-2.amzn2023.0.1.aarch64
less-debugsource-608-2.amzn2023.0.1.aarch64
src:
less-608-2.amzn2023.0.1.src
x86_64:
less-debuginfo-608-2.amzn2023.0.1.x86_64
less-debugsource-608-2.amzn2023.0.1.x86_64
less-608-2.amzn2023.0.1.x86_64
Amazon Linux AMI: All versions
less: before 608-2
External linkshttp://alas.aws.amazon.com/AL2023/ALAS-2023-123.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.