Vulnerability · Published Mar 30, 2021 · Assigned by GitHub_M

CVE-2021-21412[thi.ng/egf] Potential arbitrary code execution of `#gpg`-tagged property values

Medium 6.4

In plain English

A medium-severity OS command injection in egf from thi-ng. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 71% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.4Medium

Exploit odds (30 days)1.3%top 28.6% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

Potential for arbitrary code execution in npm package @thi.ng/egf `#gpg`-tagged property values (only if `decrypt: true` option is enabled). PR with patch has been submitted and will has been released as of v0.4.0 By default the EGF parse functions do NOT attempt to decrypt values (since GPG only available in non-browser env). However, if GPG encrypted values are used/required: 1. Perform a regex search for `#gpg`-tagged values in the EGF source file/string and check for backtick (\`) chars in the encrypted value string 2. Replace/remove them or skip parsing if present.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	@thi.ng/egf	0.4.0	GHSA-rj44-gpjc-29r7

Affected products (as reported)

Vendor	Product	Versions
thi-ng	egf	< 0.4.0

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

References

https://github.com/thi-ng/umbrella/security/advisories/GHSA-rj44-gpjc-29r7 x_refsource_CONFIRM
https://github.com/thi-ng/umbrella/commit/88f61656e5f5cfba960013b8133186389efaf243 x_refsource_MISC
https://github.com/thi-ng/umbrella/blob/develop/packages/egf/CHANGELOG.md#040-2021-03-27 x_refsource_MISC
https://www.npmjs.com/package/%40thi.ng/egf x_refsource_MISC