CVE-2017-2807: An exploitable buffer overflow vulnerability exists in the tag parsing functionality of Ledger-CLI 3.1.1

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HIGH 7.5DOWNGRADE

CVE-2017-2807 is a high-severity flaw (CVSS 7.5) affecting ledger. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An exploitable buffer overflow vulnerability exists in the tag parsing functionality of Ledger-CLI 3.1.1. A specially crafted journal file can cause an integer underflow resulting in code execution. An attacker can construct a malicious journal file to trigger this vulnerability.

Why this priority

High severity

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	2.0% (top 20%)
CISA exploited list	No
Weakness	CWE-119
Published	2017-09-05
Last modified	2026-06-17

Publisher (CNA): Talos · Vendor: ledger-cli

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

Am I affected?

Timeline

2017-09-05 18:29 UTCPublished CVE record published
2026-06-17 01:16 UTCUpdated Record last modified

ledger-cli ledger DOWNGRADE

Affected: 3.1.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.1.1

1. Check installed version

apt-cache policy ledger || rpm -q ledger || ledger --version

2. No fixed release: DOWNGRADE to a release before 3.1.1 (Debian / Ubuntu)

apt-cache madison ledger sudo apt install ledger=<VERSION_BEFORE_3.1.1> sudo apt-mark hold ledger

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

dnf --showduplicates list ledger sudo dnf downgrade ledger-<VERSION_BEFORE_3.1.1> sudo dnf versionlock add ledger

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-2017-2807?

ledger: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-2807 being exploited?

CVE-2017-2807 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-2017-2807 affect?

CVE-2017-2807 affects ledger. Severity is high (CVSS 7.5). An exploitable buffer overflow vulnerability exists in the tag parsing functionality of Ledger-CLI 3.1.1. A specially crafted journal file can cause an integer underflow resulting in code execution. An attacker can construct a malicious jou

How urgent is CVE-2017-2807?

Priority 46/100. High severity

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References

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