CVE-2019-11841: Golang.org/x/crypto Golang/x/crypto Message Forgery Vulnerability Vulnerability
MODERATECVE-2019-11841 is a MODERATE (CVSS 5.9) golang/x/crypto message forgery vulnerability vulnerability (CWE-347: Improper Verification of Cryptographic Signature) affecting Golang.org/x/crypto libraries in the Go ecosystem. The issue involves golang/x/crypto message forgery vulnerability. Remediation is available by upgrading affected packages to version 0.0.0-20190424203555-c05e17bb3b2d.
CVE-2019-11841 at a Glance
Security Impact
CVSS: 5.9
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N).
How to Fix CVE-2019-11841
To remediate this vulnerability, upgrade all affected Golang.org/x/crypto dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade golang.org/x/crypto to 0.0.0-20190424203555-c05e17bb3b2dRun the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for golang.org/x/cryptoHow to Check if You Are Affected
To determine whether your application is affected by CVE-2019-11841, inspect your project dependencies for Golang.org/x/crypto:
inspect dependencies for golang.org/x/cryptoAnalyze the terminal output to locate any version of Golang.org/x/crypto in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.0.0-20190424203555-c05e17bb3b2d), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-347: Improper Verification of Cryptographic Signature, where the product does not verify, or incorrectly verifies, the cryptographic signature for data. In Golang.org/x/crypto, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2019-11841 Affected Golang.org/x/crypto Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
golang.org/x/crypto
|
Go |
< 0.0.0-20190424203555-c05e17bb3b2d
|
0.0.0-20190424203555-c05e17bb3b2d
|
References
Frequently Asked Questions
What is CVE-2019-11841?
Which Golang.org/x/crypto versions are affected?
What version fixes CVE-2019-11841?
Is golang.org/x/crypto affected?
What is the CVSS score of CVE-2019-11841?
What CWE is associated with CVE-2019-11841?
How can I check Go dependencies for CVE-2019-11841?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-x3jr-pf6g-c48f",
"modified" : "2023-10-02T15:42:07Z",
"published" : "2022-05-24T16:46:15Z",
"aliases" : [ "CVE-2019-11841" ],
"summary" : "Golang/x/crypto message forgery 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.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "golang.org/x/crypto"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "0.0.0-20190424203555-c05e17bb3b2d"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-11841"
}, {
"type" : "WEB",
"url" : "https://github.com/golang/crypto/commit/c05e17bb3b2dca130fc919668a96b4bec9eb9442"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/golang/crypto/tree/master/openpgp/clearsign"
}, {
"type" : "WEB",
"url" : "https://go-review.git.corp.google.com/c/crypto/+/173778"
}, {
"type" : "WEB",
"url" : "https://go.googlesource.com/crypto/+/c05e17bb3b2dca130fc919668a96b4bec9eb9442"
}, {
"type" : "WEB",
"url" : "https://groups.google.com/d/msg/golang-openpgp/6vdgZoTgbIY/K6bBY9z3DAAJ"
}, {
"type" : "WEB",
"url" : "https://lists.debian.org/debian-lts-announce/2019/09/msg00011.html"
}, {
"type" : "WEB",
"url" : "https://lists.debian.org/debian-lts-announce/2020/10/msg00014.html"
}, {
"type" : "WEB",
"url" : "https://lists.debian.org/debian-lts-announce/2023/06/msg00017.html"
}, {
"type" : "WEB",
"url" : "https://pkg.go.dev/vuln/GO-2023-1992"
}, {
"type" : "WEB",
"url" : "https://web.archive.org/web/20201207161832/https://sec-consult.com/en/blog/advisories/cleartext-message-spoofing-in-go-cryptography-libraries-cve-2019-11841"
}, {
"type" : "WEB",
"url" : "http://packetstormsecurity.com/files/152840/Go-Cryptography-Libraries-Cleartext-Message-Spoofing.html"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-347" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2023-08-01T23:32:27Z",
"nvd_published_at" : "2019-05-22T17:29:00Z"
}
}