CVE-2023-52159: A stack-based buffer overflow vulnerability in gross 0.9.3 through 1.x before 1.0.4 allows remote attackers to

This month

HIGH 7.5REMOTEWATCHLISTUPGRADEMITIGATE

CVE-2023-52159 is a high-severity flaw (CVSS 7.5) affecting gross, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A stack-based buffer overflow vulnerability in gross 0.9.3 through 1.x before 1.0.4 allows remote attackers to trigger a denial of service (grossd daemon crash) or potentially execute arbitrary code in grossd via crafted SMTP transaction parameters that cause an incorrect strncat for a log entry.

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

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 36%)
CISA exploited list	No
Weakness	CWE-787
Published	2024-03-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bizdelnick · debian

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

Am I affected?

Timeline

2024-03-18 02:15 UTCPublished CVE record published
2026-06-17 06:42 UTCUpdated Record last modified

bizdelnick gross UPGRADE

Affected: >= 0.9.3 and < 1.0.4

Fixed in: 1.0.4

Safe to downgrade to: a release before 0.9.3

1. Check installed version

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

2. UPGRADE to 1.0.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade gross

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade gross

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 0.9.3 (Debian / Ubuntu)

apt-cache madison gross sudo apt install gross=<VERSION_BEFORE_0.9.3> sudo apt-mark hold gross

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list gross sudo dnf downgrade gross-<VERSION_BEFORE_0.9.3> sudo dnf versionlock add gross

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.

debian debian linux MITIGATE

Affected: 10.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2023-52159?

gross: upgrade to 1.0.4; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-52159 being exploited?

CVE-2023-52159 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-2023-52159 affect?

CVE-2023-52159 affects gross, debian linux. Severity is high (CVSS 7.5). A stack-based buffer overflow vulnerability in gross 0.9.3 through 1.x before 1.0.4 allows remote attackers to trigger a denial of service (grossd daemon crash) or potentially execute arbitrary code in grossd via crafted SMTP transaction pa

How urgent is CVE-2023-52159?

Priority 52/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Debian vulnerabilities

References

← Back to latest CVEs