Deserialization in Apache Tapestry
CVE-2019-0195
Manipulating classpath asset file URLs, an attacker could guess the path to a known file in the classpath and have it downloaded. If the attacker found the file with the value of the tapestry.hmac-passphrase configuration symbol, most probably the webapp's AppModule class, the value of this symbol could be used to craft a Java deserialization attack, thus running malicious injected Java code. The vector would be the t:formdata parameter from the Form component.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.140 (96.5th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.139 · newest: 0.140 · change: +0.001
Affected products
- Apache Tapestry
- Apache Tapestry — versions Apache Tapestry 5.4.0 to 5.4.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.apache.org/thread.html/5173c4eed06e2fca6fd5576ed723ff6bb1711738ec515cb51a… (mailing-list)
- lists.apache.org/thread.html/a4092cb3bacb143571024e79c0016c039b6c982423daa33a7a… (mailing-list)
- lists.apache.org/thread.html/6c40c1e03d2131119f9b77882431a0050f02bf9cae9ee48b84… (mailing-list)
- lists.apache.org/thread.html/r87523dd07886223aa086edc25fe9b8ddb9c1090f7db25b068… (mailing-list)
- lists.apache.org/thread.html/r7d9c54beb1dc97dcccc58d9b5d31f0f7166f9a25ad1beba5f… (mailing-list)
- lists.apache.org/thread.html/r237ff7f286bda31682c254550c1ebf92b0ec61329b32fbeb2… (mailing-list)
- www.openwall.com/lists/oss-security/2021/04/15/1 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-0195?
- CVE-2019-0195 is a critical-severity vulnerability in Apache Tapestry, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2019-09-16.
- How severe is CVE-2019-0195?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2019-0195 known to be exploited?
- 14 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.