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CVE-2017-2344

Junos: Buffer overflow in sockets library

High7.8EPSS 0.48%
Published
Updated
Reserved
Assigned by
juniper

Description

A routine within an internal Junos OS sockets library is vulnerable to a buffer overflow. Malicious exploitation of this issue may lead to a denial of service (kernel panic) or be leveraged as a privilege escalation through local code execution. The routines are only accessible via programs running on the device itself, and veriexec restricts arbitrary programs from running on Junos OS. There are no known exploit vectors utilizing signed binaries shipped with Junos OS itself. Affected releases are Juniper Networks Junos OS 12.1X46 prior to 12.1X46-D67; 12.3X48 prior to 12.3X48-D51, 12.3X48-D55; 13.3 prior to 13.3R10-S2; 14.1 prior to 14.1R2-S10, 14.1R8-S4, 14.1R9; 14.1X50 prior to 14.1X50-D185; 14.1X53 prior to 14.1X53-D122, 14.1X53-D45, 14.1X53-D50; 14.2 prior to 14.2R4-S9, 14.2R7-S7, 14.2R8; 15.1 prior to 15.1F2-S18, 15.1F6-S7, 15.1R4-S8, 15.1R5-S5, 15.1R6-S1, 15.1R7; 15.1X49 prior to 15.1X49-D100; 15.1X53 prior to 15.1X53-D231, 15.1X53-D47, 15.1X53-D48, 15.1X53-D57, 15.1X53-D64, 15.1X53-D70; 16.1 prior to 16.1R3-S4, 16.1R4-S3, 16.1R4-S4, 16.1R5; 16.2 prior to 16.2R2; 17.1 prior to 17.1R1-S3, 17.1R2; 17.2 prior to 17.2R1-S1, 17.2R2; 17.2X75 prior to 17.2X75-D30. No other Juniper Networks products or platforms are affected by this issue.

Scores

CVSS scores of CVE-2017-2344, by who scored it
Scored byCVSSScoreVector
juniperCNA (assigner)3.0High7.8CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Modified3.0High7.8CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.48% · top 58% of all CVEs (2 Nov 2026)

Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Weakness

Affected products

  • Juniper Networks · Junos OS

    • affected 12.1X46 prior to 12.1X46-D67
    • affected 12.3X48 prior to 12.3X48-D51, 12.3X48-D55
    • affected 13.3 prior to 13.3R10-S2
    • affected 14.1 prior to 14.1R2-S10, 14.1R8-S4, 14.1R9
    • affected 14.1X50 prior to 14.1X50-D185
    • affected 14.1X53 prior to 14.1X53-D122, 14.1X53-D45, 14.1X53-D50
    • affected 14.2 prior to 14.2R4-S9, 14.2R7-S7, 14.2R8
    • affected 15.1 prior to 15.1F2-S18, 15.1F6-S7, 15.1R4-S8, 15.1R5-S5, 15.1R6-S1, 15.1R7
    • affected 15.1X49 prior to 15.1X49-D100
    • affected 15.1X53 prior to 15.1X53-D231, 15.1X53-D47, 15.1X53-D48, 15.1X53-D57, 15.1X53-D64, 15.1X53-D70
    • affected 16.1 prior to 16.1R3-S4, 16.1R4-S3, 16.1R4-S4, 16.1R5
    • affected 16.2 prior to 16.2R2
    • affected 17.1 prior to 17.1R1-S3, 17.1R2
    • affected 17.2 prior to 17.2R1-S1, 17.2R2
    • affected 17.2X75 prior to 17.2X75-D30

What to do

Workaround: Limit access to the Junos CLI only from trusted hosts and administrators.

References (3)

Sources

The same CVE in the primary databases and aggregators, to check against.

Record last updated .