PatchTheCVECVE-2004-0234: Multiple stack-based buffer overflows in the get_header function in header.c for LHA 1.14, as used in products
64
This week
HIGH 10.0DOWNGRADEDOWNGRADEDOWNGRADE
CVE-2004-0234 is a high-severity flaw (CVSS 10.0) affecting mailsweeper, f-secure anti-virus, f-secure for firewalls. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Multiple stack-based buffer overflows in the get_header function in header.c for LHA 1.14, as used in products such as Barracuda Spam Firewall, allow remote attackers or local users to execute arbitrary code via long directory or file names in an LHA archive, which triggers the overflow when testing or extracting the archive.
Why this priority
- Critical severity
- EPSS top 4%: very likely to be exploited
- Public exploit reference
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 10.0 (High) |
| EPSS exploit chance | 10.3% (top 4%) |
| CISA exploited list | No |
| Weakness | CWE-119 |
| Published | 2004-08-18 |
| Last modified | 2026-06-16 |
Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
clearswift mailsweeper DOWNGRADE
Affected: 4.0 · 4.1 · 4.2 · 4.3 · 4.3.3 · 4.3.4 · 4.3.5 · 4.3.6
Fixed in: no fixed release known
Safe to downgrade to: a release before 4.0
1. Check installed version
apt-cache policy mailsweeper || rpm -q mailsweeper || mailsweeper --version
2. No fixed release: DOWNGRADE to a release before 4.0 (Debian / Ubuntu)
apt-cache madison mailsweeper
sudo apt install mailsweeper=<VERSION_BEFORE_4.0>
sudo apt-mark hold mailsweeper
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list mailsweeper
sudo dnf downgrade mailsweeper-<VERSION_BEFORE_4.0>
sudo dnf versionlock add mailsweeper
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.
f-secure f-secure anti-virus DOWNGRADE
Affected: 4.51 · 4.52 · 4.60 · 5.5 · 5.41 · 5.42 · 5.52 · 6.21
Fixed in: no fixed release known
Safe to downgrade to: a release before 4.51
1. Check installed version
apt-cache policy f-secure-anti-virus || rpm -q f-secure-anti-virus || f-secure-anti-virus --version
2. No fixed release: DOWNGRADE to a release before 4.51 (Debian / Ubuntu)
apt-cache madison f-secure-anti-virus
sudo apt install f-secure-anti-virus=<VERSION_BEFORE_4.51>
sudo apt-mark hold f-secure-anti-virus
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list f-secure-anti-virus
sudo dnf downgrade f-secure-anti-virus-<VERSION_BEFORE_4.51>
sudo dnf versionlock add f-secure-anti-virus
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.
f-secure f-secure for firewalls DOWNGRADE
Affected: 6.20
Fixed in: no fixed release known
Safe to downgrade to: a release before 6.20
1. Check installed version
apt-cache policy f-secure-for-firewalls || rpm -q f-secure-for-firewalls || f-secure-for-firewalls --version
2. No fixed release: DOWNGRADE to a release before 6.20 (Debian / Ubuntu)
apt-cache madison f-secure-for-firewalls
sudo apt install f-secure-for-firewalls=<VERSION_BEFORE_6.20>
sudo apt-mark hold f-secure-for-firewalls
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list f-secure-for-firewalls
sudo dnf downgrade f-secure-for-firewalls-<VERSION_BEFORE_6.20>
sudo dnf versionlock add f-secure-for-firewalls
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.
f-secure f-secure internet security DOWNGRADE
Affected: 2003 · 2004
Fixed in: no fixed release known
Safe to downgrade to: a release before 2003
1. Check installed version
apt-cache policy f-secure-internet-security || rpm -q f-secure-internet-security || f-secure-internet-security --version
2. No fixed release: DOWNGRADE to a release before 2003 (Debian / Ubuntu)
apt-cache madison f-secure-internet-security
sudo apt install f-secure-internet-security=<VERSION_BEFORE_2003>
sudo apt-mark hold f-secure-internet-security
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list f-secure-internet-security
sudo dnf downgrade f-secure-internet-security-<VERSION_BEFORE_2003>
sudo dnf versionlock add f-secure-internet-security
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.
f-secure f-secure personal express DOWNGRADE
Affected: 4.5 · 4.6 · 4.7
Fixed in: no fixed release known
Safe to downgrade to: a release before 4.5
1. Check installed version
apt-cache policy f-secure-personal-express || rpm -q f-secure-personal-express || f-secure-personal-express --version
2. No fixed release: DOWNGRADE to a release before 4.5 (Debian / Ubuntu)
apt-cache madison f-secure-personal-express
sudo apt install f-secure-personal-express=<VERSION_BEFORE_4.5>
sudo apt-mark hold f-secure-personal-express
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list f-secure-personal-express
sudo dnf downgrade f-secure-personal-express-<VERSION_BEFORE_4.5>
sudo dnf versionlock add f-secure-personal-express
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.
f-secure internet gatekeeper DOWNGRADE
Affected: 6.31 · 6.32
Fixed in: no fixed release known
Safe to downgrade to: a release before 6.31
1. Check installed version
apt-cache policy internet-gatekeeper || rpm -q internet-gatekeeper || internet-gatekeeper --version
2. No fixed release: DOWNGRADE to a release before 6.31 (Debian / Ubuntu)
apt-cache madison internet-gatekeeper
sudo apt install internet-gatekeeper=<VERSION_BEFORE_6.31>
sudo apt-mark hold internet-gatekeeper
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list internet-gatekeeper
sudo dnf downgrade internet-gatekeeper-<VERSION_BEFORE_6.31>
sudo dnf versionlock add internet-gatekeeper
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.
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-2004-0234?
mailsweeper: downgrade or apply the listed mitigation; f-secure anti-virus: downgrade or apply the listed mitigation; f-secure for firewalls: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2004-0234 being exploited?
CVE-2004-0234 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-2004-0234 affect?
CVE-2004-0234 affects mailsweeper, f-secure anti-virus, f-secure for firewalls. Severity is high (CVSS 10.0). Multiple stack-based buffer overflows in the get_header function in header.c for LHA 1.14, as used in products such as Barracuda Spam Firewall, allow remote attackers or local users to execute arbitrary code via long directory or file names
How urgent is CVE-2004-0234?
Priority 64/100. Critical severity; EPSS top 4%: very likely to be exploited; Public exploit reference
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