CVE catalog
CVE-2019-11841
golang-go.crypto: CVE-2019-11841
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.00% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | golang-go.crypto | sid | 1:0.58.0-1 | fixed |
| Debian | golang-go.crypto | forky | 1:0.58.0-1 | fixed |
| Debian | golang-go.crypto | trixie | 1:0.25.0-1 | fixed |
| Debian | golang-go.crypto | bookworm | 1:0.4.0-1 | fixed |
| Ubuntu | golang-go.crypto | pro | 1:0.0~git20170629.0.5ef0053-1ubuntu1 | vulnerable |
| Ubuntu | golang-go.crypto | pro | 1:0.0~git20170629.0.5ef0053-1ubuntu2 | vulnerable |
| Ubuntu | golang-go.crypto | pro | 1:0.0~git20170629.0.5ef0053-2 | vulnerable |
| Ubuntu | golang-go.crypto | pro | 1:0.0~git20170629.0.5ef0053-2ubuntu0.1~esm1 | vulnerable |
| Ubuntu | golang-go.crypto | pro | 1:0.0~git20170629.0.5ef0053-2ubuntu0.1~esm2 | vulnerable |
| Ubuntu | golang-go.crypto | pro | 1:0.0~git20170629.0.5ef0053-2ubuntu0.1~esm3 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | golang-go.crypto | source | sid | 1:0.0~git20200221.2aa609c-1 | not yet assigned | Not reported | Not reported |
| Debian | golang-go.crypto | source | forky | 1:0.0~git20200221.2aa609c-1 | not yet assigned | Not reported | Not reported |
| Debian | golang-go.crypto | source | trixie | 1:0.0~git20200221.2aa609c-1 | not yet assigned | Not reported | Not reported |
| Debian | golang-go.crypto | source | bookworm | 1:0.0~git20200221.2aa609c-1 | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [golang-golang-x-crypto-dev]Fixed
Source package: [golang-go.crypto]
Details (4)
1:0.4.0-1· all · bookwormFixed · Fixed:
1:0.0~git20200221.2aa609c-1dsa · golang-go.crypto · debian · bookworm; dsa · golang-go.crypto · debian · 12
1:0.4.0-1· all · bookwormFixed · Fixed:
1:0.0~git20200221.2aa609c-1dsa · golang-go.crypto · debian · bookworm; dsa · golang-go.crypto · debian · 12
1:0.25.0-1~bpo12+1· all · bookworm-backportsFixed · Fixed:
1:0.0~git20200221.2aa609c-1dsa · golang-go.crypto · debian · bookworm; dsa · golang-go.crypto · debian · 12
1:0.25.0-1~bpo12+1· all · bookworm-backportsFixed · Fixed:
1:0.0~git20200221.2aa609c-1dsa · golang-go.crypto · debian · bookworm; dsa · golang-go.crypto · debian · 12
[Debian 13 (Trixie)]
- [golang-golang-x-crypto-dev]Fixed
Source package: [golang-go.crypto]
Details (4)
1:0.25.0-1· all · trixieFixed · Fixed:
1:0.0~git20200221.2aa609c-1dsa · golang-go.crypto · debian · 13
1:0.25.0-1· all · trixieFixed · Fixed:
1:0.0~git20200221.2aa609c-1dsa · golang-go.crypto · debian · 13
1:0.52.0-1~bpo13+1· all · trixie-backportsFixed · Fixed:
1:0.0~git20200221.2aa609c-1dsa · golang-go.crypto · debian · 13
1:0.52.0-1~bpo13+1· all · trixie-backportsFixed · Fixed:
1:0.0~git20200221.2aa609c-1dsa · golang-go.crypto · debian · 13
Observed:
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2019-11841]
- [https://osv.dev/vulnerability/DLA-1920-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2019-11841]
- [https://security-tracker.debian.org/tracker/CVE-2019-11841]
- [https://wid.cert-bund.de/.well-known/csaf/white/2022/wid-sec-w-2022-0510.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]