Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 3 |
CVE-ID | CVE-2021-33197 CVE-2021-33198 CVE-2021-34558 |
CWE-ID | CWE-862 CWE-399 CWE-295 |
Exploitation vector | Network |
Public exploit | Public exploit code for vulnerability #3 is available. |
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: #VU56023
Risk: Medium
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-33197
CWE-ID:
CWE-862 - Missing Authorization
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass authorization process.
The vulnerability exists due to an error in some configurations of ReverseProxy (from net/http/httputil). A remote attacker can drop arbitrary headers and bypass authorization process.
MitigationUpdate the affected packages:
i686:Vulnerable software versions
golang-1.15.14-1.69.amzn1.i686
golang-bin-1.15.14-1.69.amzn1.i686
noarch:
golang-tests-1.15.14-1.69.amzn1.noarch
golang-misc-1.15.14-1.69.amzn1.noarch
golang-docs-1.15.14-1.69.amzn1.noarch
golang-src-1.15.14-1.69.amzn1.noarch
src:
golang-1.15.14-1.69.amzn1.src
x86_64:
golang-1.15.14-1.69.amzn1.x86_64
golang-race-1.15.14-1.69.amzn1.x86_64
golang-bin-1.15.14-1.69.amzn1.x86_64
Amazon Linux AMI: All versions
External linkshttp://alas.aws.amazon.com/ALAS-2021-1527.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: #VU56024
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-2021-33198
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources within the application when handling a large exponent to the math/big.Rat SetString or UnmarshalText method. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
MitigationUpdate the affected packages:
i686:Vulnerable software versions
golang-1.15.14-1.69.amzn1.i686
golang-bin-1.15.14-1.69.amzn1.i686
noarch:
golang-tests-1.15.14-1.69.amzn1.noarch
golang-misc-1.15.14-1.69.amzn1.noarch
golang-docs-1.15.14-1.69.amzn1.noarch
golang-src-1.15.14-1.69.amzn1.noarch
src:
golang-1.15.14-1.69.amzn1.src
x86_64:
golang-1.15.14-1.69.amzn1.x86_64
golang-race-1.15.14-1.69.amzn1.x86_64
golang-bin-1.15.14-1.69.amzn1.x86_64
Amazon Linux AMI: All versions
External linkshttp://alas.aws.amazon.com/ALAS-2021-1527.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: #VU55665
Risk: Medium
CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2021-34558
CWE-ID:
CWE-295 - Improper Certificate Validation
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper certificate verification in crypto/tls package in Go when processing X.509 certificates. The application does not properly assert that the type of public key in an X.509 certificate matches the expected type when doing a RSA based key exchange, allowing a malicious TLS server to cause a TLS client to panic.
MitigationUpdate the affected packages:
i686:Vulnerable software versions
golang-1.15.14-1.69.amzn1.i686
golang-bin-1.15.14-1.69.amzn1.i686
noarch:
golang-tests-1.15.14-1.69.amzn1.noarch
golang-misc-1.15.14-1.69.amzn1.noarch
golang-docs-1.15.14-1.69.amzn1.noarch
golang-src-1.15.14-1.69.amzn1.noarch
src:
golang-1.15.14-1.69.amzn1.src
x86_64:
golang-1.15.14-1.69.amzn1.x86_64
golang-race-1.15.14-1.69.amzn1.x86_64
golang-bin-1.15.14-1.69.amzn1.x86_64
Amazon Linux AMI: All versions
External linkshttp://alas.aws.amazon.com/ALAS-2021-1527.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. However, proof of concept for this vulnerability is available.