vulnwire
9.8crit

CVE-2017-18922

It was discovered that websockets.c in LibVNCServer prior to 0.9.12 did not properly decode certain WebSocket frames.

Published 6 y ago · modified 4 mo ago · JSON

CVSS
9.8
v3.1 · NVD
CISA KEV
No
not known exploited
EPSS
2.3%
percentile 83%
Public exploits
0
none known

It was discovered that websockets.c in LibVNCServer prior to 0.9.12 did not properly decode certain WebSocket frames. A malicious attacker could exploit this by sending specially crafted WebSocket frames to a server, causing a heap-based buffer overflow.

Exploit prediction (EPSS)

2.26% probability of exploitation in the next 30 days, higher than 83% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.19.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD2.07.5AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

References

  • github.com /LibVNC/libvncserver/commit/aac95a9dcf4bbba87b76c72706c3221a842ca433 · x_refsource_MISC, x_transferred
  • openwall.com /lists/oss-security/2020/06/30/2 · x_refsource_MISC, x_transferred
  • bugzilla.redhat.com /show_bug.cgi?id=1852356 · x_refsource_MISC, x_transferred
  • openwall.com /lists/oss-security/2020/06/30/3 · mailing-list, x_refsource_MLIST, x_transferred
  • lists.opensuse.org /opensuse-security-announce/2020-07/msg00020.html · vendor-advisory, x_refsource_SUSE, x_transferred
  • lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/NVP7TJVYJDXDFRHVQ3ENEN3H · vendor-advisory, x_refsource_FEDORA, x_transferred
  • usn.ubuntu.com /4407-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/4F6FUH4EFK4NAP6GT4TQRTBK · vendor-advisory, x_refsource_FEDORA, x_transferred
  • lists.opensuse.org /opensuse-security-announce/2020-07/msg00028.html · vendor-advisory, x_refsource_SUSE, x_transferred
  • lists.opensuse.org /opensuse-security-announce/2020-07/msg00033.html · vendor-advisory, x_refsource_SUSE, x_transferred
  • lists.opensuse.org /opensuse-security-announce/2020-07/msg00055.html · vendor-advisory, x_refsource_SUSE, x_transferred
  • lists.opensuse.org /opensuse-security-announce/2020-07/msg00066.html · vendor-advisory, x_refsource_SUSE, x_transferred
  • cert-portal.siemens.com /productcert/pdf/ssa-390195.pdf · x_refsource_CONFIRM, x_transferred

Sources

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