Amazon Linux AMI update for golang

1) Input validation error

EUVDB-ID: #VU48480

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-28362

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The 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 a number of math/big.Int methods (Div, Exp, DivMod, Quo, Rem, QuoRem, Mod, ModInverse, ModSqrt, Jacobi, and GCD). A remote attacker can pass large input data to the application, specifically as divisor or modulo argument larger than 3168 bits (on 32-bit architectures) or 6336 bits (on 64-bit architectures).

Mitigation

Update the affected packages:

i686:
    golang-bin-1.15.5-1.65.amzn1.i686
    golang-1.15.5-1.65.amzn1.i686

noarch:
    golang-docs-1.15.5-1.65.amzn1.noarch
    golang-misc-1.15.5-1.65.amzn1.noarch
    golang-tests-1.15.5-1.65.amzn1.noarch
    golang-src-1.15.5-1.65.amzn1.noarch

src:
    golang-1.15.5-1.65.amzn1.src

x86_64:
    golang-bin-1.15.5-1.65.amzn1.x86_64
    golang-1.15.5-1.65.amzn1.x86_64
    golang-race-1.15.5-1.65.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2020-1471.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) Code Injection

EUVDB-ID: #VU48478

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-28366

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation at build time when cgo is in use. A remote attacker can trick the victim into building a specially crafted application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected packages:

i686:
    golang-bin-1.15.5-1.65.amzn1.i686
    golang-1.15.5-1.65.amzn1.i686

noarch:
    golang-docs-1.15.5-1.65.amzn1.noarch
    golang-misc-1.15.5-1.65.amzn1.noarch
    golang-tests-1.15.5-1.65.amzn1.noarch
    golang-src-1.15.5-1.65.amzn1.noarch

src:
    golang-1.15.5-1.65.amzn1.src

x86_64:
    golang-bin-1.15.5-1.65.amzn1.x86_64
    golang-1.15.5-1.65.amzn1.x86_64
    golang-race-1.15.5-1.65.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2020-1471.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) Code Injection

EUVDB-ID: #VU48479

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-28367

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation at build time when cgo is in use. A remote attacker can trick the victim to build a specially crafted application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected packages:

i686:
    golang-bin-1.15.5-1.65.amzn1.i686
    golang-1.15.5-1.65.amzn1.i686

noarch:
    golang-docs-1.15.5-1.65.amzn1.noarch
    golang-misc-1.15.5-1.65.amzn1.noarch
    golang-tests-1.15.5-1.65.amzn1.noarch
    golang-src-1.15.5-1.65.amzn1.noarch

src:
    golang-1.15.5-1.65.amzn1.src

x86_64:
    golang-bin-1.15.5-1.65.amzn1.x86_64
    golang-1.15.5-1.65.amzn1.x86_64
    golang-race-1.15.5-1.65.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2020-1471.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.