CVE-2021-40530

See a problem?
Please try reporting it to the source first.
Source
https://nvd.nist.gov/vuln/detail/CVE-2021-40530
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-40530.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-40530
Related
Published
2021-09-06T19:15:07Z
Modified
2025-01-08T08:19:06.098017Z
Downstream
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

The ElGamal implementation in Crypto++ through 8.5 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.

References

Affected packages

Debian:11 / libcrypto++

Package

Name
libcrypto++
Purl
pkg:deb/debian/libcrypto%2B%2B?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

8.*

8.4.0-1
8.5.0-1
8.6.0-1
8.6.0-2
8.6.0-3
8.7.0-1
8.7.0+git220824-1
8.8.0-1
8.8.0-2
8.9.0-1
8.9.0-1.1~exp1
8.9.0-1.1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / libcrypto++

Package

Name
libcrypto++
Purl
pkg:deb/debian/libcrypto%2B%2B?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.6.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / libcrypto++

Package

Name
libcrypto++
Purl
pkg:deb/debian/libcrypto%2B%2B?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.6.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Git / github.com/weidai11/cryptopp

Affected ranges

Type
GIT
Repo
https://github.com/weidai11/cryptopp
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
f2102243e6fdd48c0b2a393a0993cca228f20573

Affected versions

Other

CRYPTOPP_5_0
CRYPTOPP_5_1
CRYPTOPP_5_2
CRYPTOPP_5_2_1
CRYPTOPP_5_2_3
CRYPTOPP_5_3_0
CRYPTOPP_5_4
CRYPTOPP_5_5
CRYPTOPP_5_5_1
CRYPTOPP_5_5_2
CRYPTOPP_5_6_0
CRYPTOPP_5_6_1
CRYPTOPP_5_6_2
CRYPTOPP_5_6_3
CRYPTOPP_5_6_4
CRYPTOPP_5_6_5
CRYPTOPP_6_0_0
CRYPTOPP_6_1_0
CRYPTOPP_7_0_0
CRYPTOPP_8_0_0
CRYPTOPP_8_1_0
CRYPTOPP_8_2_0
CRYPTOPP_8_3_0
CRYPTOPP_8_4_0
CRYPTOPP_8_5_0