What is CVE-2021-3727?

CVE-2021-3727 is a high-severity vulnerability in Ohmyzsh Ohmyzsh/ohmyzsh, classified under OS Command Injection. CVSS score: 7.5/10. Published 2021-11-30.

How severe is CVE-2021-3727?

High severity. CVSS v3 base score is 7.5 out of 10.

RCE in Ohmyzsh Ohmyzsh/ohmyzsh

CVE-2021-3727

# Vulnerability in `rand-quote` and `hitokoto` plugins **Description**: the `rand-quote` and `hitokoto` fetch quotes from quotationspage.com and hitokoto.cn respectively, do some process on them and then use `print -P` to print them. If these quotes contained the proper symbols, they could trigger command injection. Given that they're an external API, it's not possible to know if the quotes are safe to use. **Fixed in**: [72928432](https://github.com/ohmyzsh/ohmyzsh/commit/72928432). **Impacted areas**: - `rand-quote` plugin (`quote` function). - `hitokoto` plugin (`hitokoto` function).

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.010 (60.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Ohmyzsh Ohmyzsh/ohmyzsh — versions unspecified
Planetargon Oh_my_zsh

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

security@huntr.dev (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-3727?: CVE-2021-3727 is a high-severity vulnerability in Ohmyzsh Ohmyzsh/ohmyzsh, classified under OS Command Injection. CVSS score: 7.5/10. Published 2021-11-30.
How severe is CVE-2021-3727?: High severity. CVSS v3 base score is 7.5 out of 10.