Resource exhaustion in Oracle Application Express
CVE-2021-32723
Prism is a syntax highlighting library. Some languages before 1.24.0 are vulnerable to Regular Expression Denial of Service (ReDoS). When Prism is used to highlight untrusted (user-given) text, an attacker can craft a string that will take a very very long time to highlight. This problem has been fixed in Prism v1.24. As a workaround, do not use ASCIIDoc or ERB to highlight untrusted text. Other languages are not affected and can be used to highlight untrusted text.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.014 (71.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H.
Affected products
- Oracle Application_express
- Prismjs Prism — versions < 1.24
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-32723?
- CVE-2021-32723 is a high-severity vulnerability in Oracle Application Express, classified under Uncontrolled Resource Consumption. CVSS score: 7.4/10. Published 2021-06-28.
- How severe is CVE-2021-32723?
- High severity. CVSS v3 base score is 7.4 out of 10.