CVE-2021-33560

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Source
https://cve.org/CVERecord?id=CVE-2021-33560
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-33560.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-33560
Downstream
Related
Published
2021-06-08T11:15:07.767Z
Modified
2026-03-15T22:40:57.983767Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP.

References

Affected packages

Git / git.gnupg.org/libgcrypt.git

Affected ranges

Type
GIT
Repo
git://git.gnupg.org/libgcrypt.git
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
d3d4803ca1b1d50fdb0c8fa2891c75e0229ff25f
Introduced
0dc49af9b5371c5e2f766b70c3bede2b10db9f7e
Fixed
cb78627203705365d24b48ec4fc4cf2fc804b277
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
9d94d7846cde272b8b1519ba96e53967bf0b90d2
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
0dc49af9b5371c5e2f766b70c3bede2b10db9f7e
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
e4ab2147f3e236f7be95f9709ce09193b2ca5c1a
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
850aca744eeda5fd410f478a0778e353045ac962
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.8.8"
        },
        {
            "introduced": "1.9.0"
        },
        {
            "fixed": "1.9.3"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.11.0"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.9.0"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.10.0"
        },
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.8.0"
        }
    ]
}

Affected versions

libgcrypt-1.*
libgcrypt-1.9.0
libgcrypt-1.9.1
libgcrypt-1.9.2

Database specific

unresolved_ranges 
[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "9.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "33"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "34"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "1.14.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "1.15.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "1.15.1"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "1.15.0"
            }
        ]
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-33560.json"