What is CVE-2017-15331?A medium-severity flaw in Ar120-S, explained.

Medium severity84 affected products
The short answer

CVE-2017-15331 is a medium-severity flaw (CVSS 5.3) in Ar120-S from Huawei, published on 15 February 2018. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 1.5%. If you run an affected version, plan in the vendor’s fix.

Published 15 February 2018. Record last updated 1 March 2018. We keep this page's data up to date.

What it does

What is CVE-2017-15331? In plain terms.

It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can slow it down.

The official description

Huawei AR120-S V200R006C10, V200R007C00, V200R008C20, V200R008C30, AR1200 V200R006C10, V200R006C13, V200R007C00, V200R007C01, V200R007C02, V200R008C20, V200R008C30, AR1200-S V200R006C10, V200R007C00, V200R008C20, V200R008C30, AR150 V200R006C10, V200R007C00, V200R007C01, V200R007C02, V200R008C20, V200R008C30, AR150-S V200R006C10, V200R007C00, V200R008C20, V200R008C30, AR160 V200R006C10, V200R006C12, V200R007C00, V200R007C01, V200R007C02, V200R008C20, V200R008C30, AR200 V200R006C10, V200R007C00, V200R007C01, V200R008C20, V200R008C30, AR200-S V200R006C10, V200R007C00, V200R008C20, V200R008C30, AR2200 V200R006C10, V200R006C13, V200R006C16PWE, V200R007C00, V200R007C01, V200R007C02, V200R008C20, V200R008C30, AR2200-S V200R006C10, V200R007C00, V200R008C20, V200R008C30, AR3200 V200R006C10, V200R006C11, V200R007C00, V200R007C01, V200R007C02, V200R008C00, V200R008C10, V200R008C20, V200R008C30, AR510 V200R006C10, V200R006C12, V200R006C13, V200R006C15, V200R006C16, V200R006C17, V200R007C00, V200R008C20, V200R008C30, DP300 V500R002C00, IPS Module V100R001C10SPC200, V100R001C20, V100R001C30, V500R001C00, V500R001C20, V500R001C30, V500R001C50, MAX PRESENCE V100R001C00, NGFW Module V100R001C10SPC200, V100R001C20, V100R001C30, V500R001C00, V500R001C20, V500R002C00, V500R002C10, NIP6300 V500R001C00, V500R001C20, V500R001C30, V500R001C50, NIP6600 V500R001C00, V500R001C20, V500R001C30, V500R001C50, NIP6800 V500R001C50, NetEngine16EX V200R006C10, V200R007C00, V200R008C20, V200R008C30, RP200 V500R002C00SPC200, V600R006C00, RSE6500 V500R002C00, SMC2.0 V100R003C10, V100R005C00, V500R002C00, V500R002C00T, V600R006C00, V600R006C00T, SRG1300 V200R006C10, V200R007C00, V200R007C02, V200R008C20, V200R008C30, SRG2300 V200R006C10, V200R007C00, V200R007C02, V200R008C20, V200R008C30, SRG3300 V200R006C10, V200R007C00, V200R008C20, V200R008C30, SVN5600 V200R003C00, V200R003C10, SVN5800 V200R003C00, V200R003C10, SVN5800-C V200R003C00, V200R003C10, Secospace USG6300 V100R001C10, V100R001C20, V100R001C30, V500R001C00, V500R001C20, V500R001C30, V500R001C50, Secospace USG6500 V100R001C10, V100R001C20, V100R001C30, V500R001C00, V500R001C20, V500R001C30, V500R001C50, TE30 V100R001C10, V500R002C00, V600R006C00, TE40 V500R002C00, V600R006C00, TE50 V500R002C00, V600R006C00, TE60 V100R001C01, V100R001C10, V500R002C00, V600R006C00, TP3106 V100R002C00, TP3206 V100R002C00, USG9500 V500R001C00, V500R001C20, V500R001C30, V500R001C50, USG9520 V300R001C01, V300R001C20, USG9560 V300R001C01, V300R001C20, USG9580 V300R001C01, V300R001C20, ViewPoint 9030 V100R011C02, V100R011C03, have an out-of-bounds read vulnerability in H323 protocol. An unauthenticated, remote attacker may send crafted packets to the affected products. Due to insufficient verification of the packets, successful exploit will cause process reboot.

What kind of flaw is it?

  • CWE-125Out-of-bounds Read
CVSS 3.0 scoreMedium · 5.3

How an attack on it works

Read straight from its severity rating, translated out of the shorthand.

  • Where an attacker can beAnywhere on the internet
  • How hard it is to pull offEasy: no special conditions
  • Login needed firstNo login needed
  • Does someone have to clickNo, nobody has to do anything
  • What an attacker getsCan slow it down

Severity vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploitation

Is CVE-2017-15331 being exploited? Not that we know of.

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 1.5%. That can change at any time, which is why we keep watching.

Known to be exploitedNoNot on the list of exploited flaws today
Chance of use in the next 30 days1.5%Its EPSS score, from the latest forecast

Timeline

  1. Published
  2. Record last updated
How Precursor Intelligence ranks it
29out of 100Low

CVE-2017-15331 scores 29. Action: Monitor.

We keep the score of every published flaw up to date as the evidence changes. Four things go into the score, and evidence that criminals are actually using it counts most. In order:

  • Evidence it is being exploitedBiggest factor
  • How severe it isStrong factor
  • How widely exposed it isSmaller factor
  • Threat activity around itSmaller factor

85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score.

When CVE-2017-15331 matches software you track, it lands in your list with its score and the reasons behind it.

See your own ranked list →
Affected products

Who is affected by CVE-2017-15331? 84 products.

The published record lists 84 products from 1 vendor. If you run one of these, check your version, then go to the fix below.

  • Hardware

    Ar120-S

    by Huawei

    Affected versions
    version not specified
  • Operating system

    Ar3200 Firmware

    by Huawei

    Affected versions
    v200r006c10v200r006c11v200r007c00v200r007c01v200r007c02v200r008c00
  • Operating system

    Ar510 Firmware

    by Huawei

    Affected versions
    v200r006c10v200r006c12v200r006c13v200r006c15v200r006c16v200r006c17
  • Operating system

    Ar2200 Firmware

    by Huawei

    Affected versions
    v200r006c10v200r006c13v200r006c16pwev200r007c00v200r007c01v200r007c02
  • Operating system

    Ar1200 Firmware

    by Huawei

    Affected versions
    v200r006c10v200r006c13v200r007c00v200r007c01v200r007c02v200r008c20
  • Operating system

    Ar160 Firmware

    by Huawei

    Affected versions
    v200r006c10v200r006c12v200r007c00v200r007c01v200r007c02v200r008c20
  • Operating system

    IPS Module Firmware

    by Huawei

    Affected versions
    v100r001c10spc200v100r001c20v100r001c30v500r001c00v500r001c20v500r001c30
  • Operating system

    Ngfw Module Firmware

    by Huawei

    Affected versions
    v100r001c10spc200v100r001c20v100r001c30v500r001c00v500r001c20v500r002c00
  • Operating system

    Secospace Usg6300 Firmware

    by Huawei

    Affected versions
    v100r001c10v100r001c20v100r001c30v500r001c00v500r001c20v500r001c30
Remediation

How do I fix CVE-2017-15331? Four steps.

  1. Check whether you run itCompare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list.
  2. Apply the vendor’s fixInstall the update named in the vendor’s advisory. We’ve put the advisory first in the list.
  3. If you can’t patch todayFollow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in.
  4. Keep an eye on itTrack the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood.
Precursor Intelligence

Does CVE-2017-15331 affect you? We'll keep checking.

Looking flaws up one at a time doesn't scale. Tell us what you run once, and we tell you which flaws matter to you, in what order, and keep watching for new ones.

  1. Tell us what you runPick your software from a list, or let us work it out from your website.
  2. We match it to every flawOver 400,000 published flaws, checked against your list.
  3. Ranked by real-world riskA 0 to 100 score, led by evidence criminals are using it.
  4. Told as soon as we knowAn alert by email, in the app or by webhook to your own tools.

Free plan, no card needed. Nothing to install.

FAQ

Common questions, answered plainly.

Something else? Talk to the team →

CVE-2017-15331 is a medium-severity flaw in Ar120-S from Huawei, published on 15 February 2018. It can be attacked from anywhere on the internet without logging in, and nobody has to click anything. If it works, the attacker can slow it down.

It scores 5.3 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2017-15331 is 29 out of 100, which is Low. Its action is "Monitor". No sign of exploitation and a low forecast. Patch it in your normal update cycle.

It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 1.5%. That can change at any time, which is why we keep watching.

For Ar120-S from Huawei: version not specified. The record lists 84 products in all, each with its versions, under "Who is affected" on this page.

Install the update the vendor names in its advisory, linked first under "How do I fix" on this page. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet.