gsd-2021-40529
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
The ElGamal implementation in Botan through 2.18.1, as used in Thunderbird and other products, allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-40529",
"description": "The ElGamal implementation in Botan through 2.18.1, as used in Thunderbird and other products, allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver\u0027s public key, the generator defined by the receiver\u0027s public key, and the sender\u0027s ephemeral exponents can lead to a cross-configuration attack against OpenPGP.",
"id": "GSD-2021-40529",
"references": [
"https://www.suse.com/security/cve/CVE-2021-40529.html",
"https://advisories.mageia.org/CVE-2021-40529.html",
"https://security.archlinux.org/CVE-2021-40529"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2021-40529"
],
"details": "The ElGamal implementation in Botan through 2.18.1, as used in Thunderbird and other products, allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver\u0027s public key, the generator defined by the receiver\u0027s public key, and the sender\u0027s ephemeral exponents can lead to a cross-configuration attack against OpenPGP.",
"id": "GSD-2021-40529",
"modified": "2023-12-13T01:23:25.190564Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "cve@mitre.org",
"ID": "CVE-2021-40529",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "n/a",
"version": {
"version_data": [
{
"version_value": "n/a"
}
]
}
}
]
},
"vendor_name": "n/a"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "The ElGamal implementation in Botan through 2.18.1, as used in Thunderbird and other products, allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver\u0027s public key, the generator defined by the receiver\u0027s public key, and the sender\u0027s ephemeral exponents can lead to a cross-configuration attack against OpenPGP."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://eprint.iacr.org/2021/923",
"refsource": "MISC",
"url": "https://eprint.iacr.org/2021/923"
},
{
"name": "https://ibm.github.io/system-security-research-updates/2021/07/20/insecurity-elgamal-pt1",
"refsource": "MISC",
"url": "https://ibm.github.io/system-security-research-updates/2021/07/20/insecurity-elgamal-pt1"
},
{
"name": "https://ibm.github.io/system-security-research-updates/2021/09/06/insecurity-elgamal-pt2",
"refsource": "MISC",
"url": "https://ibm.github.io/system-security-research-updates/2021/09/06/insecurity-elgamal-pt2"
},
{
"name": "https://github.com/randombit/botan/pull/2790",
"refsource": "MISC",
"url": "https://github.com/randombit/botan/pull/2790"
},
{
"name": "FEDORA-2021-14b0d97496",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPHGYWNJQKWLTUWBNSFB4F66MQDIL3IB/"
},
{
"name": "FEDORA-2021-8d51cac49f",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/72NB4OLD3VHJC3YF3PEP2HKF6BYURPAO/"
},
{
"name": "GLSA-202208-14",
"refsource": "GENTOO",
"url": "https://security.gentoo.org/glsa/202208-14"
}
]
}
},
"gitlab.com": {
"advisories": [
{
"affected_range": "\u003c=2.18.1",
"affected_versions": "All versions up to 2.18.1",
"cvss_v2": "AV:N/AC:H/Au:N/C:P/I:N/A:N",
"cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"cwe_ids": [
"CWE-1035",
"CWE-327",
"CWE-937"
],
"date": "2022-12-09",
"description": "The ElGamal implementation in Botan, as used in Thunderbird and other products, allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver\u0027s public key, the generator defined by the receiver\u0027s public key, and the sender\u0027s ephemeral exponents can lead to a cross-configuration attack against OpenPGP.",
"fixed_versions": [
"2.18.2"
],
"identifier": "CVE-2021-40529",
"identifiers": [
"CVE-2021-40529"
],
"not_impacted": "All versions after 2.18.1",
"package_slug": "conan/botan",
"pubdate": "2021-09-06",
"solution": "Upgrade to version 2.18.2 or above.",
"title": "Use of a Broken or Risky Cryptographic Algorithm",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2021-40529"
],
"uuid": "412694bd-1c28-438e-ac30-e1ec169574d5"
}
]
},
"nvd.nist.gov": {
"configurations": {
"CVE_data_version": "4.0",
"nodes": [
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:botan_project:botan:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndIncluding": "2.18.1",
"vulnerable": true
}
],
"operator": "OR"
},
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": true
}
],
"operator": "OR"
},
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndExcluding": "91.12.0",
"vulnerable": true
}
],
"operator": "OR"
}
]
},
"cve": {
"CVE_data_meta": {
"ASSIGNER": "cve@mitre.org",
"ID": "CVE-2021-40529"
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "en",
"value": "The ElGamal implementation in Botan through 2.18.1, as used in Thunderbird and other products, allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver\u0027s public key, the generator defined by the receiver\u0027s public key, and the sender\u0027s ephemeral exponents can lead to a cross-configuration attack against OpenPGP."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "en",
"value": "CWE-327"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://ibm.github.io/system-security-research-updates/2021/07/20/insecurity-elgamal-pt1",
"refsource": "MISC",
"tags": [
"Third Party Advisory"
],
"url": "https://ibm.github.io/system-security-research-updates/2021/07/20/insecurity-elgamal-pt1"
},
{
"name": "https://ibm.github.io/system-security-research-updates/2021/09/06/insecurity-elgamal-pt2",
"refsource": "MISC",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://ibm.github.io/system-security-research-updates/2021/09/06/insecurity-elgamal-pt2"
},
{
"name": "https://github.com/randombit/botan/pull/2790",
"refsource": "MISC",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://github.com/randombit/botan/pull/2790"
},
{
"name": "https://eprint.iacr.org/2021/923",
"refsource": "MISC",
"tags": [
"Technical Description",
"Third Party Advisory"
],
"url": "https://eprint.iacr.org/2021/923"
},
{
"name": "FEDORA-2021-14b0d97496",
"refsource": "FEDORA",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPHGYWNJQKWLTUWBNSFB4F66MQDIL3IB/"
},
{
"name": "FEDORA-2021-8d51cac49f",
"refsource": "FEDORA",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/72NB4OLD3VHJC3YF3PEP2HKF6BYURPAO/"
},
{
"name": "GLSA-202208-14",
"refsource": "GENTOO",
"tags": [
"Third Party Advisory"
],
"url": "https://security.gentoo.org/glsa/202208-14"
}
]
}
},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "HIGH",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 2.6,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:H/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 4.9,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "LOW",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 3.6
}
},
"lastModifiedDate": "2022-12-09T15:24Z",
"publishedDate": "2021-09-06T19:15Z"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…