What is CVE-2021-3674?

CVE-2021-3674 is a high-severity vulnerability in Rizin, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2023-03-24.

How severe is CVE-2021-3674?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2021-3674 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Rizin

CVE-2021-3674

A flaw was found in rizin. The create_section_from_phdr function allocates space for ELF section data by processing the headers. Crafted values in the headers can cause out of bounds reads, which can lead to memory corruption and possibly code execution through the binary object's callback function.

Vulnerability class: Buffer Overflow

EPSS: 0.004 (34.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Rizin
N/a Rizin — versions affected rizin after version v0.2.1 until commit 1e0c34946dddf9b8e5e63933aefacf2b26d08103

Weakness classification (CWE)

Public proof-of-concept exploits

References

patrick@puiterwijk.org (Exploit, Patch, Vendor Advisory)
patrick@puiterwijk.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-3674?: CVE-2021-3674 is a high-severity vulnerability in Rizin, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2023-03-24.
How severe is CVE-2021-3674?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2021-3674 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.