Bug#891614: jackson-databind: CVE-2018-7489: incomplete fix for CVE-2017-7525 permits unsafe serialization via c3p0 libraries

[Salvatore Bonaccorso]

Source: jackson-databind
Version: 2.9.4-1
Severity: grave
Tags: patch security upstream
Justification: user security hole
Forwarded: https://github.com/FasterXML/jackson-databind/issues/1931

Hi,

the following vulnerability was published for jackson-databind.

CVE-2018-7489[0]:
| FasterXML jackson-databind before 2.8.11.1 and 2.9.x before 2.9.5
| 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 c3p0
| libraries are available in the classpath.

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2018-7489
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7489
[1] https://github.com/FasterXML/jackson-databind/issues/1931
[2] https://github.com/FasterXML/jackson-databind/commit/6799f8f10cc78e9af6d443ed6982d00a13f2e7d2

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore