cbcvebase.
CVE-2017-17485
published 2018-01-10

CVE-2017-17485: FasterXML jackson-databind through 2.8.10 and 2.9.x through 2.9.3 allows unauthenticated remote code execution because of an incomplete fix for the…

PriorityP275critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
49.73%
98.8th percentile
FasterXML jackson-databind through 2.8.10 and 2.9.x through 2.9.3 allows unauthenticated remote code execution because of an incomplete fix for the CVE-2017-7525 deserialization flaw. This is exploitable by sending maliciously crafted JSON input to the readValue method of the ObjectMapper, bypassing a blacklist that is ineffective if the Spring libraries are available in the classpath.

Affected

22 ranges
VendorProductVersion rangeFixed in
debiandebian_linux
debiandebian_linux
debianjackson-databind< jackson-databind 2.9.4-1 (bookworm)jackson-databind 2.9.4-1 (bookworm)
fasterxmljackson-databind< 2.6.7.32.6.7.3
fasterxmljackson-databind>= 0 < 2.9.4-12.9.4-1
fasterxmljackson-databind>= 0 < 2.9.4-12.9.4-1
fasterxmljackson-databind>= 0 < 2.9.4-12.9.4-1
fasterxmljackson-databind>= 0 < 2.9.4-12.9.4-1
fasterxmljackson-databind>= 2.0.0 < 2.6.7.32.6.7.3
fasterxmljackson-databind>= 2.7.0 < 2.7.9.22.7.9.2
fasterxmljackson-databind>= 2.8.0 < 2.8.112.8.11
fasterxmljackson-databind>= 2.8.0 < 2.8.11.12.8.11.1
fasterxmljackson-databind>= 2.9.0 < 2.9.42.9.4
netappe-series_santricity_os_controller11.0.0 – 11.60.3
redhatjboss_enterprise_application_platform
redhatjboss_enterprise_application_platform
redhatjboss_enterprise_application_platform
redhatjboss_enterprise_application_platform
redhatopenshift_container_platform
redhatopenshift_container_platform
redhatvirtualization
redhatvirtualization_host

Detection & IOCsextracted from sources · hover to see the quote

  • Exploit targets the `readValue` method of `ObjectMapper` in jackson-databind via maliciously crafted JSON input to trigger unsafe deserialization
  • Exploitation requires Spring libraries to be present in the classpath; detection should check for co-presence of Spring and vulnerable jackson-databind versions (≤2.8.10 or 2.9.0–2.9.3)
  • Monitor for polymorphic type handling abuse via `enableDefaultTyping(...)` in ObjectMapper configurations; candlepin/applications NOT using enableDefaultTyping are not exploitable
  • Patch commit for the related CVE-2018-5968 blacklist bypass (gadget chain fix) is available for diff-based detection of unpatched deployments
  • ·Vulnerability is only exploitable when `enableDefaultTyping(...)` is enabled on the ObjectMapper OR when per-field/class polymorphic type handling is used; default configurations are not affected
  • ·The blacklist bypass specifically requires Spring libraries to be present in the application classpath; environments without Spring are not vulnerable via this specific gadget chain
  • ·JBoss EAP 7.x uses jackson-databind only for JAX-RS JSON marshalling/unmarshalling; safe coding practices for JAX-RS webservices can mitigate exposure even on unpatched versions

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
ghsa9.8CRITICAL
osv9.8CRITICAL
vendor_debian9.8CRITICAL
vendor_redhat9.8CRITICAL
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