Multiple vulnerabilities in Go



| Updated: 2022-06-14
Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2022-27191
CVE-2022-28327
CVE-2022-24675
CWE-ID CWE-327
CWE-190
CWE-120
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Go programming language
Universal components / Libraries / Scripting languages

Vendor Google

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

Updated 13.04.2022

Added fixed version.

Updated 14.06.2022

Added vulnerabilities #2-3.

1) Use of a broken or risky cryptographic algorithm

EUVDB-ID: #VU62039

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-2022-27191

CWE-ID: CWE-327 - Use of a Broken or Risky Cryptographic Algorithm

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an error in golang.org/x/crypto/ssh before 0.0.0-20220314234659-1baeb1ce4c0b, as used in Go programming language. A remote attacker can crash a server in certain circumstances involving AddHostKey.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Go programming language: 1.16 - 1.17.8

CPE2.3 External links

http://groups.google.com/g/golang-announce/c/-cp44ypCT5s


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) Integer overflow

EUVDB-ID: #VU64269

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-28327

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to integer overflow in the Golang's library crypto/elliptic. A remote attacker can send a specially crafted scalar input longer than 32 bytes to cause P256().ScalarMult or P256().ScalarBaseMult to panic and perform a denial of service attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Go programming language: 1 - 1.18

CPE2.3 External links

http://groups.google.com/g/golang-announce
http://groups.google.com/g/golang-announce/c/oecdBNLOml8
http://bugzilla.redhat.com/show_bug.cgi?id=2077689


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) Buffer overflow

EUVDB-ID: #VU64266

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-24675

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists in the Golang's library encoding/pem. A remote attacker can send to victim a large (more than 5 MB) PEM input to cause a stack overflow in Decode and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Go programming language: 1 - 1.18

CPE2.3 External links

http://groups.google.com/g/golang-announce
http://groups.google.com/g/golang-announce/c/oecdBNLOml8
http://bugzilla.redhat.com/show_bug.cgi?id=2077688


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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