Amazon Linux AMI update for privoxy
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2021-20275 CVE-2021-44540 CVE-2021-44542 |
| CWE-ID | CWE-125 CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Amazon Linux AMI Operating systems & Components / Operating system privoxy Operating systems & Components / Operating system package or component |
| Vendor | Amazon Web Services |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Out-of-bounds read
EUVDB-ID: #VU50976
Risk: Medium
CVSSv4.0: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-20275
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within the chunked_body_is_complete() function. A remote attacker can send specially crafted data to the application, trigger an out-of-bounds read error and read contents of memory on the system.
MitigationUpdate the affected packages:
i686:Vulnerable software versions
privoxy-3.0.23-2.17.amzn1.i686
privoxy-debuginfo-3.0.23-2.17.amzn1.i686
src:
privoxy-3.0.23-2.17.amzn1.src
x86_64:
privoxy-3.0.23-2.17.amzn1.x86_64
privoxy-debuginfo-3.0.23-2.17.amzn1.x86_64
Amazon Linux AMI: All versions
privoxy: before 3.0.23-2.17
CPE2.3- cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*
- cpe:2.3:o:amazon_web_services:privoxy:*:*:*:*:*:amazon_linux_ami:*:*
https://alas.aws.amazon.com/ALAS-2023-1739.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.
2) Input validation error
EUVDB-ID: #VU58829
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-2021-44540
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 the "get_url_spec_param" function. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
MitigationUpdate the affected packages:
i686:Vulnerable software versions
privoxy-3.0.23-2.17.amzn1.i686
privoxy-debuginfo-3.0.23-2.17.amzn1.i686
src:
privoxy-3.0.23-2.17.amzn1.src
x86_64:
privoxy-3.0.23-2.17.amzn1.x86_64
privoxy-debuginfo-3.0.23-2.17.amzn1.x86_64
Amazon Linux AMI: All versions
privoxy: before 3.0.23-2.17
CPE2.3- cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*
- cpe:2.3:o:amazon_web_services:privoxy:*:*:*:*:*:amazon_linux_ami:*:*
https://alas.aws.amazon.com/ALAS-2023-1739.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.
3) Input validation error
EUVDB-ID: #VU58831
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-2021-44542
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 the "send_http_request" function. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
MitigationUpdate the affected packages:
i686:Vulnerable software versions
privoxy-3.0.23-2.17.amzn1.i686
privoxy-debuginfo-3.0.23-2.17.amzn1.i686
src:
privoxy-3.0.23-2.17.amzn1.src
x86_64:
privoxy-3.0.23-2.17.amzn1.x86_64
privoxy-debuginfo-3.0.23-2.17.amzn1.x86_64
Amazon Linux AMI: All versions
privoxy: before 3.0.23-2.17
CPE2.3- cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*
- cpe:2.3:o:amazon_web_services:privoxy:*:*:*:*:*:amazon_linux_ami:*:*
https://alas.aws.amazon.com/ALAS-2023-1739.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.
