CVE-2020-7226 Denial of Service in Cryptacular
Attackers can cause excessive memory allocation and denial of service in Cryptacular by sending crafted encoded data headers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-7226?
CVE-2020-7226 is a high-severity denial of service vulnerability in Oracle Webcenter Sites, published on 24 Jan 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
CiphertextHeader.java in Cryptacular 1.2.3, as used in Apereo CAS and other products, allows attackers to trigger excessive memory allocation during a decode operation, because the nonce array length associated with "new byte" may depend on untrusted input within the header of encoded data.
Weakness: CWE-770
Which versions are affected by CVE-2020-7226?
4 open source packages ship an affected version, including org.cryptacular:cryptacular. It affects 4 products.
| Package | Affected | Fixed in |
|---|---|---|
org.cryptacular:cryptacular Maven | All versions | 1.1.4 |
org.cryptacular:cryptacular Maven | All versions | 1.1.4 |
org.cryptacular:cryptacular Maven | From 1.2.0 | 1.2.4 |
org.cryptacular:cryptacular Maven | From 1.2.0 | 1.2.4 |
Products include Oracle Communications Services Gatekeeper, Oracle Webcenter Sites, Oracle Weblogic Server, Vt Cryptacular.
How do I fix CVE-2020-7226?
Upgrade org.cryptacular:cryptacular to a fixed version for your release line: 1.1.4 or 1.2.4.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-7226 being exploited?
There is no known exploitation of CVE-2020-7226 in the wild and no public exploit code.
Sources
Also known as GHSA-x64g-4xx9-fh6x.