cbcvebase.
CVE-2019-0008
published 2019-04-10

CVE-2019-0008: A certain sequence of valid BGP or IPv6 BFD packets may trigger a stack based buffer overflow in the Junos OS Packet Forwarding Engine manager (FXPC) process…

PriorityP264critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
4.54%
90.4th percentile
A certain sequence of valid BGP or IPv6 BFD packets may trigger a stack based buffer overflow in the Junos OS Packet Forwarding Engine manager (FXPC) process on QFX5000 series, EX4300, EX4600 devices. This issue can result in a crash of the fxpc daemon or may potentially lead to remote code execution. Affected releases are Juniper Networks Junos OS on QFX 5000 series, EX4300, EX4600 are: 14.1X53; 15.1X53 versions prior to 15.1X53-D235; 17.1 versions prior to 17.1R3; 17.2 versions prior to 17.2R3; 17.3 versions prior to 17.3R3-S2, 17.3R4; 17.4 versions prior to 17.4R2-S1, 17.4R3; 18.1 versions prior to 18.1R3-S1, 18.1R4; 18.2 versions prior to 18.2R2; 18.2X75 versions prior to 18.2X75-D30; 18.3 versions prior to 18.3R2.

Affected

25 ranges
VendorProductVersion rangeFixed in
juniperjunos
juniperjunos
juniperjunos
juniperjunos
juniperjunos>= 15.1x53 < 15.1x53-d23515.1x53-d235
juniperjunos>= 17.1 < 17.1r317.1r3
juniperjunos>= 17.2 < 17.2r317.2r3
juniperjunos>= 17.3 < 17.3r3-s217.3r3-s2
juniperjunos>= 17.4 < 17.4r2-s117.4r2-s1
juniperjunos>= 18.1 < 18.1r3-s118.1r3-s1
juniperjunos>= 18.2 < 18.2r218.2r2
juniperjunos>= 18.2x75 < 18.2x75-d3018.2x75-d30
juniperjunos>= 18.3 < 18.3r218.3r2
juniperjunos_os
juniperqfx_series
juniper_networksjunos_os
juniper_networksjunos_os>= 15.1X53 < 15.1X53-D23515.1X53-D235
juniper_networksjunos_os>= 17.1 < 17.1R317.1R3
juniper_networksjunos_os>= 17.2 < 17.2R317.2R3
juniper_networksjunos_os>= 17.3 < 17.3R3-S2, 17.3R417.3R3-S2, 17.3R4
juniper_networksjunos_os>= 17.4 < 17.4R2-S1, 17.4R317.4R2-S1, 17.4R3
juniper_networksjunos_os>= 18.1 < 18.1R3-S1, 18.1R418.1R3-S1, 18.1R4
juniper_networksjunos_os>= 18.2 < 18.2R218.2R2
juniper_networksjunos_os>= 18.2X75 < 18.2X75-D3018.2X75-D30
juniper_networksjunos_os>= 18.3 < 18.3R218.3R2

Detection & IOCsextracted from sources · hover to see the quote

  • Monitor for crashes of the fxpc (Packet Forwarding Engine manager) daemon on QFX5000 series, EX4300, and EX4600 devices, which may indicate exploitation of this stack-based buffer overflow via crafted BGP or IPv6 BFD packets.
  • Inspect BGP and IPv6 BFD traffic destined for vulnerable Junos OS devices (QFX5000, EX4300, EX4600) for anomalous or malformed packet sequences that could trigger the FXPC buffer overflow.
  • ·Only QFX5000 series, EX4300, and EX4600 devices running affected Junos OS versions are vulnerable. Devices on fixed releases (e.g., 15.1X53-D235+, 17.1R3+, 17.2R3+, 17.3R3-S2/17.3R4+, 17.4R2-S1/17.4R3+, 18.1R3-S1/18.1R4+, 18.2R2+, 18.2X75-D30+, 18.3R2+) are not affected.
  • ·The triggering packets are described as 'valid' BGP or IPv6 BFD packets, meaning standard protocol-conformant traffic can trigger the vulnerability — simple malformed-packet filters may not be sufficient to block exploitation.

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv3.09.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
vendor_redhat5.5MEDIUM
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