vulnwire
4.2med

CVE-2020-26558

Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby man-in-the-middle attacker to id…

Published 5 y ago · modified 4 mo ago · JSON

CVSS
4.2
v3.1 · NVD
CISA KEV
No
not known exploited
EPSS
0.9%
percentile 59%
Public exploits
0
none known

Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby man-in-the-middle attacker to identify the Passkey used during pairing (in the Passkey authentication procedure) by reflection of the public key and the authentication evidence of the initiating device, potentially permitting this attacker to complete authenticated pairing with the responding device using the correct Passkey for the pairing session. The attack methodology determines the Passkey value one bit at a time.

Exploit prediction (EPSS)

0.88% probability of exploitation in the next 30 days, higher than 59% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.14.2CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
NVD2.04.3AV:A/AC:M/Au:N/C:P/I:P/A:N

Classification

Weakness
Technology feeds
Linux kernel (RSS, critical only)

References

  • bluetooth.com /learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/ · x_refsource_MISC, x_transferred
  • kb.cert.org /vuls/id/799380 · x_refsource_MISC, x_transferred
  • lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/NSS6CTGE4UGTJLCOZOASDR3T · vendor-advisory, x_refsource_FEDORA, x_transferred
  • intel.com /content/www/us/en/security-center/advisory/intel-sa-00520.html · x_refsource_CONFIRM, x_transferred
  • intel.com /content/www/us/en/security-center/advisory/intel-sa-00517.html · x_refsource_CONFIRM, x_transferred
  • lists.debian.org /debian-lts-announce/2021/06/msg00020.html · mailing-list, x_refsource_MLIST, x_transferred
  • lists.debian.org /debian-lts-announce/2021/06/msg00019.html · mailing-list, x_refsource_MLIST, x_transferred
  • lists.debian.org /debian-lts-announce/2021/06/msg00022.html · mailing-list, x_refsource_MLIST, x_transferred
  • debian.org /security/2021/dsa-4951 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • security.gentoo.org /glsa/202209-16 · vendor-advisory, x_refsource_GENTOO, x_transferred
  • kb.cert.org /vuls/id/799380

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.