Vulnerability · Published Aug 2, 2021 · Assigned by mitre
CVE-2021-33195
High 7.3
In plain English
A high-severity security flaw in the buildah package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.2% (higher than 88% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.3High
Exploit odds (30 days)3.2%top 11.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Go before 1.15.13 and 1.16.x before 1.16.5 has functions for DNS lookups that do not validate replies from DNS servers, and thus a return value may contain an unsafe injection (e.g., XSS) that does not conform to the RFC1035 format.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:9 | buildah | 1:1.27.0-2.el9 | ALSA-2022:8008 |
| AlmaLinux:9 | buildah-tests | 1:1.27.0-2.el9 | ALSA-2022:8008 |
| AlmaLinux:8 | delve | 1.6.0-1.module_el8.5.0+2604+960c7771 | ALSA-2021:4156 |
| AlmaLinux:8 | grafana | 7.5.9-4.el8 | ALSA-2021:4226 |
| Alpine:v3.20 | go | 1.16.5-r0 | ALPINE-CVE-2021-33195 |
| Alpine:v3.21 | go | 1.16.5-r0 | ALPINE-CVE-2021-33195 |
| Alpine:v3.22 | go | 1.16.5-r0 | ALPINE-CVE-2021-33195 |
| Alpine:v3.23 | go | 1.16.5-r0 | ALPINE-CVE-2021-33195 |
| Alpine:v3.24 | go | 1.16.5-r0 | ALPINE-CVE-2021-33195 |
| Go | stdlib | 1.15.13, 1.16.5 | GO-2021-0239 |
| Rocky Linux:8 | delve | 0:1.6.0-1.module+el8.5.0+694+f77f0bfd | RLSA-2021:4156 |
| Rocky Linux:8 | go-toolset | 0:1.16.7-1.module+el8.5.0+694+f77f0bfd | RLSA-2021:4156 |
| Rocky Linux:8 | golang | 0:1.16.7-1.module+el8.5.0+694+f77f0bfd | RLSA-2021:4156 |
| Rocky Linux:8 | grafana | 0:7.5.9-4.el8 | RLSA-2021:4226 |
Affected products (as reported)
References
- https://groups.google.com/g/golang-announce x_refsource_MISC
- https://groups.google.com/g/golang-announce/c/RgCMkAEQjSI x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20210902-0005/ x_refsource_CONFIRM
- GLSA-202208-02 vendor-advisory, x_refsource_GENTOO