CVE-2017-9731: In meta/classes/package_ipk.bbclass in Poky in poky-pyro 17.0.0 for Yocto Project through YP Core - Pyro 2.3,

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HIGH 7.5REMOTEDOWNGRADE

CVE-2017-9731 is a high-severity flaw (CVSS 7.5) affecting yp core-pyro. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In meta/classes/package_ipk.bbclass in Poky in poky-pyro 17.0.0 for Yocto Project through YP Core - Pyro 2.3, attackers can obtain sensitive information by reading a URL in a Source entry in an ipk package.

Why this priority

High severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-200
Published	2017-06-16
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: yocto project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-06-16 15:29 UTCPublished CVE record published
2026-06-17 01:28 UTCUpdated Record last modified

yocto project yp core-pyro DOWNGRADE

Affected: 2.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.3

1. Check installed version

apt-cache policy yp-core-pyro || rpm -q yp-core-pyro || yp-core-pyro --version

2. No fixed release: DOWNGRADE to a release before 2.3 (Debian / Ubuntu)

apt-cache madison yp-core-pyro sudo apt install yp-core-pyro=<VERSION_BEFORE_2.3> sudo apt-mark hold yp-core-pyro

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list yp-core-pyro sudo dnf downgrade yp-core-pyro-<VERSION_BEFORE_2.3> sudo dnf versionlock add yp-core-pyro

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-9731?

yp core-pyro: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-9731 being exploited?

CVE-2017-9731 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-9731 affect?

CVE-2017-9731 affects yp core-pyro. Severity is high (CVSS 7.5). In meta/classes/package_ipk.bbclass in Poky in poky-pyro 17.0.0 for Yocto Project through YP Core - Pyro 2.3, attackers can obtain sensitive information by reading a URL in a Source entry in an ipk package.

How urgent is CVE-2017-9731?

Priority 48/100. High severity; Remotely exploitable, no login, no user action

References

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