#VU62060 Stack-based buffer overflow in iText - CVE-2022-24197

Vulnerability identifier: #VU62060

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-24197

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
iText
Universal components / Libraries / Libraries used by multiple products

Vendor: iText Group NV

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in the component ByteBuffer.append. A remote unauthenticated attacker can use a specially crafted PDF file, trigger stack-based buffer overflow and cause a denial of service condition on the target system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

iText: 7.1.17 - 7.2.1

---

External links
https://github.com/itext/itext7/pull/78
https://kb.itextpdf.com/home/it7kb/releases/release-itext-core-7-2-2

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.