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cve[email protected]CVE-2021-40530
HistorySep 06, 2021 - 7:15 p.m.

CVE-2021-40530

2021-09-0619:15:07
CWE-327
[email protected]
web.nvd.nist.gov
30
cve-2021-40530
elgamal
crypto++
plaintext recovery
cross-configuration attack
openpgp
vulnerability
nvd

2.6 Low

CVSS2

Attack Vector

NETWORK

Attack Complexity

HIGH

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:H/Au:N/C:P/I:N/A:N

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

5.4 Medium

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

54.3%

JSON

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.

Affected configurations

NVD
Node
cryptoppcrypto\+\+Range≤8.5
Node
fedoraprojectfedoraMatch33
OR
fedoraprojectfedoraMatch34
OR
fedoraprojectfedoraMatch35

Related

mageia 1
nvd 1
prion 1
openvas 4
debiancve 1
nessus 1
ubuntucve 1
fedora 3
freebsd 1
cvelist 1
osv 1
mageia
mageia
Updated libcryptopp packages fix security vulnerability
2021-10-06 22:41:56
nvd
nvd
CVE-2021-40530
2021-09-06 19:15:07
prion
prion
Design/Logic Flaw
2021-09-06 19:15:00
openvas
openvas
Fedora: Security Advisory for cryptopp (FEDORA-2021-8b14da0538)
2021-10-07 00:00:00
Mageia: Security Advisory (MGASA-2021-0468)
2022-01-28 00:00:00
Fedora: Security Advisory for cryptopp (FEDORA-2021-6788250ea4)
2021-10-07 00:00:00
debiancve
debiancve
CVE-2021-40530
2021-09-06 19:15:07
nessus
nessus
FreeBSD : cryptopp -- ElGamal implementation allows plaintext recovery (7695b0af-958f-11ec-9aa3-4ccc6adda413)
2022-02-25 00:00:00
ubuntucve
ubuntucve
CVE-2021-40530
2021-09-06 00:00:00
fedora
fedora
[SECURITY] Fedora 35 Update: cryptopp-8.6.0-1.fc35
2021-10-04 00:15:58
[SECURITY] Fedora 33 Update: cryptopp-8.6.0-1.fc33
2021-10-05 00:47:44
[SECURITY] Fedora 34 Update: cryptopp-8.6.0-1.fc34
2021-10-05 16:17:40
freebsd
freebsd
cryptopp -- ElGamal implementation allows plaintext recovery
2021-09-06 00:00:00
cvelist
cvelist
CVE-2021-40530
2021-09-06 18:44:47
osv
osv
CVE-2021-40530
2021-09-06 19:15:07

2.6 Low

CVSS2

Attack Vector

NETWORK

Attack Complexity

HIGH

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:H/Au:N/C:P/I:N/A:N

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

5.4 Medium

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

54.3%

JSON
Related for CVE-2021-40530
mageia1nvd1prion1openvas4debiancve1nessus1ubuntucve1fedora3freebsd1cvelist1osv1