CVE-2023-4639
This issue could allow an attacker to construct a cookie value to exfiltrate HttpOnly cookie values or spoof arbitrary additional cookie values, leading to unauthorized data access or modification.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.09%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A flaw was found in Undertow, which incorrectly parses cookies with certain value-delimiting characters in incoming requests. This issue could allow an attacker to construct a cookie value to exfiltrate HttpOnly cookie values or spoof arbitrary additional cookie values, leading to unauthorized data access or modification. The main threat from this flaw impacts data confidentiality and integrity.
- CVSS 3.1
- 7.4 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 1.09% probability · 64th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-444
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2024:1674
- https://access.redhat.com/errata/RHSA-2024:1675
- https://access.redhat.com/errata/RHSA-2024:1676
- https://access.redhat.com/errata/RHSA-2024:1677
- https://access.redhat.com/errata/RHSA-2024:2763
- https://access.redhat.com/errata/RHSA-2024:2764
- https://access.redhat.com/errata/RHSA-2024:3919
- https://access.redhat.com/security/cve/CVE-2023-4639
- https://bugzilla.redhat.com/show_bug.cgi?id=2166022
- https://security.netapp.com/advisory/ntap-20250207-0001/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.