CVE-2021-41991

The in-memory certificate cache in strongSwan before 5.9.4 has a remote integer overflow upon receiving many requests with different certificates to fill the cache and later trigger the replacement of cache entries. The code attempts to select a less-often-used cache entry by means of a random number generator, but this is not done correctly. Remote code execution might be a slight possibility.

References

Affected packages

Git / github.com/strongswan/strongswan

Affected ranges

Type

GIT

Repo

https://github.com/strongswan/strongswan

Events

Introduced

01a8b40b99a5943a08b1488a1a75c351593b51b7

Fixed

66fa7c959a53cff27c83e7f10331ad24cfdfb0a4

Database specific

{
    "versions": [
        {
            "introduced": "4.2.10"
        },
        {
            "fixed": "5.9.4"
        }
    ]
}

Affected versions

4.*

4.2.10

4.2.11

4.2.12

4.2.13

4.2.14

4.3.0

4.3.1

4.3.2

4.3.3

4.3.4

4.3.5

4.3.5rc1

4.3.6

4.4.0

4.4.1

4.5.0

4.5.1

4.5.2

4.5.3

4.6.0

4.6.1

4.6.2

4.6.3

5.*

5.0.0

5.0.1

5.0.2

5.0.2dr4

5.0.2rc1

5.0.3

5.0.3dr1

5.0.3dr2

5.0.3dr3

5.0.3rc1

5.0.4

5.1.0

5.1.0dr1

5.1.0dr2

5.1.0rc1

5.1.1

5.1.1dr1

5.1.1dr2

5.1.1dr3

5.1.1dr4

5.1.1rc1

5.1.2

5.1.2.dr2

5.1.2dr1

5.1.2dr3

5.1.2rc1

5.1.2rc2

5.1.3

5.1.3dr1

5.1.3rc1

5.2.0

5.2.0dr1

5.2.0dr2

5.2.0dr3

5.2.0dr4

5.2.0dr5

5.2.0dr6

5.2.0rc1

5.2.1

5.2.1dr1

5.2.1rc1

5.2.2

5.2.2dr1

5.2.2rc1

5.3.0

5.3.0dr1

5.3.0rc1

5.3.1

5.3.1dr1

5.3.1rc1

5.3.2

5.3.3

5.3.3dr1

5.3.3dr3

5.3.3dr4

5.3.3dr5

5.3.3dr6

5.3.3rc2

5.3.4

5.3.4dr1

5.3.4dr2

5.3.4dr3

5.3.4rc1

5.3.5

5.4.0

5.4.0dr1

5.4.0dr2

5.4.0dr3

5.4.0dr4

5.4.0dr5

5.4.0dr6

5.4.0dr7

5.4.0dr8

5.4.0rc1

5.4.1dr1

5.4.1dr2

5.4.1dr3

5.4.1dr4

5.5.0

5.5.0dr1

5.5.0rc1

5.5.1

5.5.1dr1

5.5.1dr2

5.5.1dr3

5.5.1dr4

5.5.1dr5

5.5.1rc1

5.5.1rc2

5.5.2

5.5.2dr1

5.5.2dr2

5.5.2dr3

5.5.2dr4

5.5.2dr5

5.5.2dr6

5.5.2dr7

5.5.2rc1

5.5.3

5.5.3dr1

5.5.3dr2

5.6.0

5.6.0dr1

5.6.0dr2

5.6.0dr3

5.6.0dr4

5.6.0rc1

5.6.0rc2

5.6.1

5.6.1dr1

5.6.1dr2

5.6.1dr3

5.6.1rc1

5.6.2

5.6.2dr1

5.6.2dr2

5.6.2dr3

5.6.2dr4

5.6.2rc1

5.6.3

5.6.3dr1

5.6.3dr2

5.6.3rc1

5.7.0

5.7.0dr1

5.7.0dr2

5.7.0dr3

5.7.0dr4

5.7.0dr5

5.7.0dr6

5.7.0dr8

5.7.0rc1

5.7.0rc2

5.7.1

5.7.2

5.7.2dr1

5.7.2dr2

5.7.2dr3

5.7.2dr4

5.7.2rc1

5.8.0

5.8.0dr2

5.8.0rc1

5.8.1

5.8.1dr1

5.8.1rc2

5.8.2

5.8.2dr1

5.8.2dr2

5.8.2rc1

5.8.2rc2

5.8.3

5.8.3rc1

5.8.4

5.9.0

5.9.0dr1

5.9.0dr2

5.9.0rc1

5.9.1

5.9.1dr1

5.9.1rc1

5.9.2

5.9.2dr1

5.9.2dr2

5.9.2rc1

5.9.2rc2

5.9.3

5.9.3dr1

5.9.3dr2

5.9.3dr3

5.9.3dr4

5.9.3rc1

5.9.4dr1

5.9.4dr2

5.9.4dr3

5.9.4rc1

android-2.*

android-2.3.3

android-2.3.3-1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-41991.json"

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "9.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "10.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "11.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "33"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "34"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "35"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "fixed": "2.3"
            }
        ]
    }
]