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GitHub Advisory DatabaseGHSA-J2R6-2M5C-VGH5

HistoryAug 25, 2021 - 8:45 p.m.

Counter overflow in chacha20

2021-08-2520:45:20

CWE-190

GitHub Advisory Database

github.com

chacha20

counter overflow

attackers

plaintext

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

EPSS

0.002

Percentile

53.8%

JSON

An issue was discovered in the chacha20 crate before 0.2.3 for Rust. A ChaCha20 counter overflow makes it easier for attackers to determine plaintext.

Affected configurations

Vulners

Node

chacha20_projectchacha20Range<0.2.3rust

VendorProductVersionCPE
chacha20_projectchacha20*cpe:2.3:a:chacha20_project:chacha20:*:*:*:*:*:rust:*:*

Vendor	Product	Version	CPE
chacha20_project	chacha20	*	cpe:2.3:a:chacha20_project:chacha20::::::rust::*

References

github.com/advisories/GHSA-j2r6-2m5c-vgh5

github.com/RustCrypto/stream-ciphers/pull/64

nvd.nist.gov/vuln/detail/CVE-2019-25005

rustsec.org/advisories/RUSTSEC-2019-0029.html

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

EPSS

0.002

Percentile

53.8%

JSON

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