CVE-2018-1000873 — Fasterxml Jackson version Before 2

Fasterxml Jackson version Before 2.9.8 contains a CWE-20: Improper Input Validation vulnerability in Jackson-Modules-Java8 that can result in Causes a denial-of-service (DoS). This attack appear to be exploitable via The victim deserializes malicious input, specifically very larg

01What is this vulnerability?

Fasterxml Jackson version Before 2.9.8 contains a CWE-20: Improper Input Validation vulnerability in Jackson-Modules-Java8 that can result in Causes a denial-of-service (DoS). This attack appear to be exploitable via The victim deserializes malicious input, specifically very large values in the nanoseconds field of a time value. This vulnerability appears to have been fixed in 2.9.8.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-12-20T17:00:00.000Z
• Last modified: 2024-08-05T12:47:57.476Z

09References

• lists.apache.org — https://lists.apache.org/thread.html/ff8dcfe29377088ab655fda9d585dccd5b1f07fabd9…
• lists.apache.org — https://lists.apache.org/thread.html/b0656d359c7d40ec9f39c8cc61bca66802ef9a2a12e…
• lists.apache.org — https://lists.apache.org/thread.html/519eb0fd45642dcecd9ff74cb3e71c20a4753f7d82e…
• lists.apache.org — https://lists.apache.org/thread.html/f9bc3e55f4e28d1dcd1a69aae6d53e609a758e34d28…
• lists.apache.org — https://lists.apache.org/thread.html/bcce5a9c532b386c68dab2f6b3ce8b0cc9b950ec551…
• lists.apache.org — https://lists.apache.org/thread.html/rca37935d661f4689cb4119f1b3b224413b22be161b…
• www.oracle.com — https://www.oracle.com/security-alerts/cpuapr2020.html
• www.oracle.com — https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
• www.oracle.com — https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
• www.oracle.com — https://www.oracle.com/security-alerts/cpuoct2020.html
• github.com — https://github.com/FasterXML/jackson-modules-java8/pull/87
• bugzilla.redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=1665601
• github.com — https://github.com/FasterXML/jackson-modules-java8/issues/90
• security.netapp.com — https://security.netapp.com/advisory/ntap-20200904-0004/