CVE-2003-0773: saned in sane-backends 1.0.7 and earlier does not check the IP address of the connecting host during the SANE_

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HIGH 7.5DOWNGRADEDOWNGRADE

CVE-2003-0773 is a high-severity flaw (CVSS 7.5) affecting sane, sane-backend. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

saned in sane-backends 1.0.7 and earlier does not check the IP address of the connecting host during the SANE_NET_INIT RPC call, which allows remote attackers to use that call even if they are restricted in saned.conf.

Why this priority

High severity

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Published	2003-09-22
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: sane

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2003-09-22 04:00 UTCPublished CVE record published
2026-06-16 22:02 UTCUpdated Record last modified

sane sane DOWNGRADE

Affected: 1.0.0 · 1.0.1 · 1.0.2 · 1.0.3 · 1.0.4 · 1.0.5 · 1.0.6 · 1.0.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0.0 (Debian / Ubuntu)

apt-cache madison sane sudo apt install sane=<VERSION_BEFORE_1.0.0> sudo apt-mark hold sane

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

dnf --showduplicates list sane sudo dnf downgrade sane-<VERSION_BEFORE_1.0.0> sudo dnf versionlock add sane

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.

sane sane-backend DOWNGRADE

Affected: 1.0.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.10

1. Check installed version

apt-cache policy sane-backend || rpm -q sane-backend || sane-backend --version

2. No fixed release: DOWNGRADE to a release before 1.0.10 (Debian / Ubuntu)

apt-cache madison sane-backend sudo apt install sane-backend=<VERSION_BEFORE_1.0.10> sudo apt-mark hold sane-backend

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

dnf --showduplicates list sane-backend sudo dnf downgrade sane-backend-<VERSION_BEFORE_1.0.10> sudo dnf versionlock add sane-backend

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-2003-0773?

sane: downgrade or apply the listed mitigation; sane-backend: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2003-0773 being exploited?

CVE-2003-0773 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-2003-0773 affect?

CVE-2003-0773 affects sane, sane-backend. Severity is high (CVSS 7.5). saned in sane-backends 1.0.7 and earlier does not check the IP address of the connecting host during the SANE_NET_INIT RPC call, which allows remote attackers to use that call even if they are restricted in saned.conf.

How urgent is CVE-2003-0773?

Priority 46/100. High severity

Related CVEs

CVE-2003-0778 MEDIUM 5.0 DOWNGRADE DOWNGRADE saned in sane-backends 1.0.7 and earlier, and possibly later versions, does not properly allocate memory in ce
CVE-2003-0777 MEDIUM 5.0 DOWNGRADE DOWNGRADE saned in sane-backends 1.0.7 and earlier, when debug messages are enabled, does not properly handle dropped co
CVE-2003-0776 HIGH 7.5 DOWNGRADE DOWNGRADE saned in sane-backends 1.0.7 and earlier does not properly "check the validity of the RPC numbers it gets befo
CVE-2003-0775 MEDIUM 5.0 DOWNGRADE DOWNGRADE saned in sane-backends 1.0.7 and earlier calls malloc with an arbitrary size value if a connection is dropped
CVE-2003-0774 HIGH 7.5 DOWNGRADE DOWNGRADE saned in sane-backends 1.0.7 and earlier does not quickly handle connection drops, which allows remote attacke

References

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