CVE-2019-13377
The implementations of SAE and EAP-pwd in hostapd and wpa_supplicant 2.x through 2.8 are vulnerable to side-channel attacks as a result of observable timing differences and cache access patterns when Brainpool curves are used.
Does this matter?
Lower severity and a low EPSS score (2.54%). Track it; it rarely justifies an emergency change on its own.
Description
The implementations of SAE and EAP-pwd in hostapd and wpa_supplicant 2.x through 2.8 are vulnerable to side-channel attacks as a result of observable timing differences and cache access patterns when Brainpool curves are used. An attacker may be able to gain leaked information from a side-channel attack that can be used for full password recovery.
- CVSS 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 2.54% probability · 85th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-203
- Affected
- w1.fi/hostapd · fedoraproject/fedora · canonical/ubuntu linux · debian/debian linux
- Source
- cve@mitre.org
EPSS 2.5% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IELLEPIXWQOJFW4SZMU3WQHO63JFAHA4/
- https://seclists.org/bugtraq/2019/Sep/56Mailing List, Third Party Advisory
- https://usn.ubuntu.com/4098-1/Third Party Advisory
- https://w1.fi/cgit/hostap/commit/?id=147bf7b88a9c231322b5b574263071ca6dbb0503Mailing List, Patch, Vendor Advisory
- https://w1.fi/cgit/hostap/commit/?id=cd803299ca485eb857e37c88f973fccfbb8600e5Mailing List, Patch, Vendor Advisory
- https://www.debian.org/security/2019/dsa-4538Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IELLEPIXWQOJFW4SZMU3WQHO63JFAHA4/
- https://seclists.org/bugtraq/2019/Sep/56Mailing List, Third Party Advisory
- https://usn.ubuntu.com/4098-1/Third Party Advisory
- https://w1.fi/cgit/hostap/commit/?id=147bf7b88a9c231322b5b574263071ca6dbb0503Mailing List, Patch, Vendor Advisory
- https://w1.fi/cgit/hostap/commit/?id=cd803299ca485eb857e37c88f973fccfbb8600e5Mailing List, Patch, Vendor Advisory
- https://www.debian.org/security/2019/dsa-4538Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.