CVE-2019-11841 (Medium) detected in github.com/golang/crypto-v0.0.0-20190308221718-c2843e01d9a2

[mend-for-github-com[bot]]

CVE-2019-11841 - Medium Severity Vulnerability

Vulnerable Library - github.com/golang/crypto-v0.0.0-20190308221718-c2843e01d9a2

[mirror] Go supplementary cryptography libraries

Library home page: https://proxy.golang.org/github.com/golang/crypto/@v/v0.0.0-20190308221718-c2843e01d9a2.zip

Path to dependency file: /go.mod

Path to vulnerable library: /go.mod

Dependency Hierarchy: - github.com/hashiCorp/terraform-v0.12.0-beta2 (Root Library) - :x: **github.com/golang/crypto-v0.0.0-20190308221718-c2843e01d9a2** (Vulnerable Library)

Found in HEAD commit: f7fe51cfc9cb28df7c91cd678cb98694031e1c0a

Found in base branch: master

Vulnerability Details

A message-forgery issue was discovered in crypto/openpgp/clearsign/clearsign.go in supplementary Go cryptography libraries 2019-03-25. According to the OpenPGP Message Format specification in RFC 4880 chapter 7, a cleartext signed message can contain one or more optional "Hash" Armor Headers. The "Hash" Armor Header specifies the message digest algorithm(s) used for the signature. However, the Go clearsign package ignores the value of this header, which allows an attacker to spoof it. Consequently, an attacker can lead a victim to believe the signature was generated using a different message digest algorithm than what was actually used. Moreover, since the library skips Armor Header parsing in general, an attacker can not only embed arbitrary Armor Headers, but also prepend arbitrary text to cleartext messages without invalidating the signatures.

Publish Date: 2019-05-22

URL: CVE-2019-11841

CVSS 3 Score Details (5.9)

Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: High - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: High - Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://nvd.nist.gov/vuln/detail/CVE-2019-11841

Release Date: 2019-05-22

Fix Resolution: golang-golang-x-crypto-dev - 1:0.0~git20200221.2aa609c-1,1:0.0~git20170407.0.55a552f+REALLY.0.0~git20161012.0.5f31782-1+deb8u1,1:0.0~git20200221.2aa609c-1;golang-go.crypto-dev - 1:0.0~git20170407.0.55a552f+REALLY.0.0~git20161012.0.5f31782-1+deb8u1,1:0.0~git20200221.2aa609c-1,1:0.0~git20200221.2aa609c-1

[mend-for-github-com[bot]]

:heavy_check_mark: This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.

[mend-for-github-com[bot]]

:information_source: This issue was automatically re-opened by Mend because the vulnerable library in the specific branch(es) has been detected in the Mend inventory.

[mend-for-github-com[bot]]

:heavy_check_mark: This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.

[mend-for-github-com[bot]]

:information_source: This issue was automatically re-opened by Mend because the vulnerable library in the specific branch(es) has been detected in the Mend inventory.