Vulnerability · Published Jun 5, 2023 · Assigned by GitHub_M

CVE-2023-34103Stored XSS (Cross Site Scripting) in html content based fields of avo

High 7.3

In plain English

A high-severity cross-site scripting in avo from avo-hq. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.3High

Exploit odds (30 days)0.6%top 53.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Avo is an open source ruby on rails admin panel creation framework. In affected versions some avo fields are vulnerable to Cross Site Scripting (XSS) when rendering html based content. Attackers do need form edit privilege in order to successfully exploit this vulnerability, but the results are stored and no specific timing is required. This issue has been addressed in commit `7891c01e` which is expected to be included in the next release of avo. Users are advised to configure CSP headers for their application and to limit untrusted user access as a mitigation.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
RubyGems	avo	2.33.3	GHSA-5cr9-5jx3-2g39
RubyGems	avo	no fix listed	GHSA-5cr9-5jx3-2g39

Affected products (as reported)

Vendor	Product	Versions
avo-hq	avo	<= 2.33.2>= 3.0.0.pre1, <= 3.0.0.pre12

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

References

https://github.com/avo-hq/avo/security/advisories/GHSA-5cr9-5jx3-2g39 x_refsource_CONFIRM
https://github.com/avo-hq/avo/commit/7891c01e1fba9ca5d7dbccc43d27f385e5d08563 x_refsource_MISC