CVE-2021-27623 Memory corruption in SAP Internet Graphics Service

Medium 5.9 Published 9 Jun 2021 Updated 3 Aug 2024

An unauthenticated attacker can crash the SAP Internet Graphics Service by sending a malicious request, causing a denial of service.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-27623?

CVE-2021-27623 is a medium-severity memory corruption vulnerability in SAP Internet Graphics Service, published on 9 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

SAP Internet Graphics Service, versions - 7.20,7.20EXT,7.53,7.20_EX2,7.81, allows an unauthenticated attacker after retrieving an existing system state value can submit a malicious IGS request over a network which due to insufficient input validation in method CXmlUtility::CheckLength() which will trigger an internal memory corruption error in the system causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.

Weakness: CWE-787

Which versions are affected by CVE-2021-27623?

It affects 1 product.

Products include Sap Netweaver as Internet Graphics Server.

How do I fix CVE-2021-27623?

No fix has been published for CVE-2021-27623 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-27623 being exploited?

There is no known exploitation of CVE-2021-27623 in the wild and no public exploit code.

Sources

Also known as GHSA-h8v8-vmcf-hf5r.