CVE-2019-11808

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2019-11808
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-11808.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2019-11808
Aliases
Published
2019-05-07T07:29:05.167Z
Modified
2026-07-08T15:55:06.570460Z
Severity
  • 3.7 (Low) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
[none]
Details

Ratpack versions before 1.6.1 generate a session ID using a cryptographically weak PRNG in the JDK's ThreadLocalRandom. This means that if an attacker can determine a small window for the server start time and obtain a session ID value, they can theoretically determine the sequence of session IDs.

References

Affected packages

Git / github.com/ratpack/ratpack

Affected ranges

Type
GIT
Repo
https://github.com/ratpack/ratpack
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
11b87db977532b57298c223e4ec82854071b6c20
Fixed
f2b63eb82dd71194319fd3945f5edf29b8f3a42d
Database specific 
{
    "cpe": "cpe:2.3:a:ratpack_project:ratpack:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.6.1"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

0.*
0.5.2
0.6.1
1.*
1.6.0-rc-1
v0.*
v0.9.0
v0.9.1
v0.9.10
v0.9.11
v0.9.12
v0.9.13
v0.9.14
v0.9.15
v0.9.16
v0.9.17
v0.9.18
v0.9.19
v0.9.2
v0.9.3
v0.9.4
v0.9.5
v0.9.6
v0.9.7
v0.9.8
v0.9.9
v1.*
v1.0.0
v1.0.0-rc-1
v1.0.0-rc-2
v1.0.0-rc-3
v1.1.0
v1.1.1
v1.2.0
v1.2.0-RC-1
v1.2.0-rc-2
v1.3.0
v1.3.0-rc-1
v1.3.0-rc-2
v1.3.1
v1.4.0
v1.4.0-rc-1
v1.4.0-rc-2
v1.4.0-rc-3
v1.5.0
v1.5.0-rc-1
v1.5.0-rc-3
v1.6.0
v1.6.0-rc-2
v1.6.0-rc-3
v1.6.0-rc-4

Database specific

vanir_signatures 
[
    {
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "71367211667805614474262679484365507025",
                "154913202557657715797989884372491816929",
                "203145417490335592114016916057217824295",
                "77552764402514804693061393479611006934"
            ]
        },
        "target": {
            "file": "ratpack-session/src/main/java/ratpack/session/SessionModule.java"
        },
        "id": "CVE-2019-11808-078847f3",
        "signature_version": "v1",
        "signature_type": "Line",
        "source": "https://github.com/ratpack/ratpack/commit/f2b63eb82dd71194319fd3945f5edf29b8f3a42d",
        "deprecated": false
    },
    {
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "223769642921180714213624975815823092972",
                "270234634705521122023414332419619368198",
                "192011128202987122063634888260665579081",
                "117400372187328187914271744312200082874",
                "99069651121528590450252327565252769957",
                "305049644449210423698307830915945668901",
                "196581739354092496730175082181381076825",
                "244116176367642181748269931645136646689",
                "300381473656706452809181982359708873149"
            ]
        },
        "target": {
            "file": "ratpack-session/src/main/java/ratpack/session/internal/DefaultSessionIdGenerator.java"
        },
        "id": "CVE-2019-11808-0fc3d6e1",
        "signature_version": "v1",
        "signature_type": "Line",
        "source": "https://github.com/ratpack/ratpack/commit/f2b63eb82dd71194319fd3945f5edf29b8f3a42d",
        "deprecated": false
    },
    {
        "digest": {
            "function_hash": "207315375411098578483848171294891764207",
            "length": 174.0
        },
        "target": {
            "function": "generateSessionId",
            "file": "ratpack-session/src/main/java/ratpack/session/internal/DefaultSessionIdGenerator.java"
        },
        "id": "CVE-2019-11808-4ea60d16",
        "signature_version": "v1",
        "signature_type": "Function",
        "source": "https://github.com/ratpack/ratpack/commit/f2b63eb82dd71194319fd3945f5edf29b8f3a42d",
        "deprecated": false
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-11808.json"
vanir_signatures_modified 
"2026-07-08T15:55:06Z"