Django REST framework

Package Instance

Lookup for vulnerable packages by Package URL.

Purlpkg:mozilla/NSS@3.61.0
Typemozilla
Namespace
NameNSS
Version3.61.0
Qualifiers
Subpath
Is_vulnerablefalse
Next_non_vulnerable_version3.68.1
Latest_non_vulnerable_version3.73.0
Affected_by_vulnerabilities
Fixing_vulnerabilities
0
url VCID-2zrv-q4tb-wqeg
vulnerability_id VCID-2zrv-q4tb-wqeg
summary 
The NSS code used for checking PKCS#1 v1.5 was leaking information useful in mounting Bleichenbacher-like attacks.
Both the overall correctness of the padding as well as the length of the encrypted message was leaking through timing side-channel.
By sending large number of attacker-selected ciphertexts, the attacker would be able to decrypt a previously intercepted PKCS#1 v1.5 ciphertext (for example, to decrypt a TLS session that used RSA key exchange), or forge a signature using the victim's key.
The issue was fixed by implementing the implicit rejection algorithm, in which the NSS returns a deterministic random message in case invalid padding is detected, as proposed in the Marvin Attack paper.
references
0
reference_url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-4421.json
reference_id
reference_type
scores
0
value 6.5
scoring_system cvssv3
scoring_elements CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-4421.json
1
reference_url https://api.first.org/data/v1/epss?cve=CVE-2023-4421
reference_id
reference_type
scores
0
value 0.00224
scoring_system epss
scoring_elements 0.4514
published_at 2026-04-13T12:55:00Z
1
value 0.00224
scoring_system epss
scoring_elements 0.45171
published_at 2026-04-11T12:55:00Z
2
value 0.00224
scoring_system epss
scoring_elements 0.45138
published_at 2026-04-12T12:55:00Z
3
value 0.00224
scoring_system epss
scoring_elements 0.45132
published_at 2026-04-02T12:55:00Z
4
value 0.00224
scoring_system epss
scoring_elements 0.45154
published_at 2026-04-04T12:55:00Z
5
value 0.00224
scoring_system epss
scoring_elements 0.45096
published_at 2026-04-07T12:55:00Z
6
value 0.00224
scoring_system epss
scoring_elements 0.45149
published_at 2026-04-09T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2023-4421
2
reference_url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4421
reference_id
reference_type
scores
url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4421
3
reference_url https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
reference_id
reference_type
scores
0
value 5.9
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
url https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
4
reference_url https://bugzilla.redhat.com/show_bug.cgi?id=2238677
reference_id 2238677
reference_type
scores
url https://bugzilla.redhat.com/show_bug.cgi?id=2238677
5
reference_url https://www.mozilla.org/en-US/security/advisories/mfsa2023-53
reference_id mfsa2023-53
reference_type
scores
0
value none
scoring_system generic_textual
scoring_elements
url https://www.mozilla.org/en-US/security/advisories/mfsa2023-53
6
reference_url https://usn.ubuntu.com/6727-1/
reference_id USN-6727-1
reference_type
scores
url https://usn.ubuntu.com/6727-1/
fixed_packages
0
url pkg:mozilla/NSS@3.61.0
purl pkg:mozilla/NSS@3.61.0
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:mozilla/NSS@3.61.0
aliases CVE-2023-4421
risk_score 3.0
exploitability 0.5
weighted_severity 5.9
resource_url http://public2.vulnerablecode.io/vulnerabilities/VCID-2zrv-q4tb-wqeg
Risk_scorenull
Resource_urlhttp://public2.vulnerablecode.io/packages/pkg:mozilla/NSS@3.61.0