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CVE-2008-0006· NVD / CVE Program· CNA redhat

Buffer overflow in (1) X.Org Xserver before 1.4.1, and (2) the libfont and libXfont libraries on some platforms including Sun Solaris, allow

Noroxi assessment

Priority: Monitor (action score 32/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 5.1% (FIRST EPSS); higher than 92.1% of all records.
  • No special conditions are required; it is repeatable.
  • Fixed version: libxfont (Debian:12) 1:1.3.1-2; xorg-server (Debian:12) 2:1.4.1~git20080105-2; xfree86 (Debian:3.1) 4.3.0.dfsg.1-14sarge7.

Low priority for now. Upgrade to libxfont (Debian:12) 1:1.3.1-2; xorg-server (Debian:12) 2:1.4.1~git20080105-2; xfree86 (Debian:3.1) 4.3.0.dfsg.1-14sarge7 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Buffer overflow in (1) X.Org Xserver before 1.4.1, and (2) the libfont and libXfont libraries on some platforms including Sun Solaris, allows context-dependent attackers to execute arbitrary code via a PCF font with a large difference between the last col and first col values in the PCF_BDF_ENCODINGS table.

HighCVSS 7.5 · v2.0—No exploit Fix available
Published
Jan 18, 2008
Updated
Jun 16, 2026
EPSS
5.1% · 92th percentile

Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
2 / 30 · 5.1%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
sunsolaris libfont
sunsolaris libxfont
x.orgxserver

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • sun solaris libfontall versions
  • sun solaris libxfontall versions
  • x.org xserverup to 1.4 inclusive

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12libxfontbefore 1:1.3.1-21:1.3.1-2
Debian:12xorg-serverbefore 2:1.4.1~git20080105-22:1.4.1~git20080105-2
Debian:3.1xfree86before 4.3.0.dfsg.1-14sarge74.3.0.dfsg.1-14sarge7
Debian:4.0xorg-serverbefore 2:1.1.1-21etch32:1.1.1-21etch3
Debian:5.0xorg-serverbefore 2:1.3.0.0.dfsg-12lenny22:1.3.0.0.dfsg-12lenny2
openSUSE:Tumbleweedxorg-x11-serverbefore 1.20.13-1.21.20.13-1.2
Red Hat:enterprise_linux:2.1::asXFree86before 0:4.1.0-86.EL0:4.1.0-86.EL
Red Hat:enterprise_linux:2.1::asXFree86-100dpi-fontsbefore 0:4.1.0-86.EL0:4.1.0-86.EL
Red Hat:enterprise_linux:2.1::asXFree86-75dpi-fontsbefore 0:4.1.0-86.EL0:4.1.0-86.EL
Red Hat:enterprise_linux:2.1::asXFree86-cyrillic-fontsbefore 0:4.1.0-86.EL0:4.1.0-86.EL
Red Hat:enterprise_linux:2.1::asXFree86-develbefore 0:4.1.0-86.EL0:4.1.0-86.EL
Red Hat:enterprise_linux:2.1::asXFree86-docbefore 0:4.1.0-86.EL0:4.1.0-86.EL
Red Hat:enterprise_linux:2.1::asXFree86-ISO8859-15-100dpi-fontsbefore 0:4.1.0-86.EL0:4.1.0-86.EL
Red Hat:enterprise_linux:2.1::asXFree86-ISO8859-15-75dpi-fontsbefore 0:4.1.0-86.EL0:4.1.0-86.EL
Red Hat:enterprise_linux:2.1::asXFree86-ISO8859-2-100dpi-fontsbefore 0:4.1.0-86.EL0:4.1.0-86.EL
Red Hat:enterprise_linux:2.1::asXFree86-ISO8859-2-75dpi-fontsbefore 0:4.1.0-86.EL0:4.1.0-86.EL
Red Hat:enterprise_linux:2.1::asXFree86-ISO8859-9-100dpi-fontsbefore 0:4.1.0-86.EL0:4.1.0-86.EL
Red Hat:enterprise_linux:2.1::asXFree86-ISO8859-9-75dpi-fontsbefore 0:4.1.0-86.EL0:4.1.0-86.EL
Red Hat:enterprise_linux:2.1::asXFree86-libsbefore 0:4.1.0-86.EL0:4.1.0-86.EL
Red Hat:enterprise_linux:2.1::asXFree86-toolsbefore 0:4.1.0-86.EL0:4.1.0-86.EL
Red Hat:enterprise_linux:2.1::asXFree86-twmbefore 0:4.1.0-86.EL0:4.1.0-86.EL
Red Hat:enterprise_linux:2.1::asXFree86-xdmbefore 0:4.1.0-86.EL0:4.1.0-86.EL
Red Hat:enterprise_linux:2.1::asXFree86-xf86cfgbefore 0:4.1.0-86.EL0:4.1.0-86.EL
Red Hat:enterprise_linux:2.1::asXFree86-xfsbefore 0:4.1.0-86.EL0:4.1.0-86.EL

+53

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:libxfont1:1.3.1-2 · Debian:12Package registry (OSV)
debian:xfree864.3.0.dfsg.1-14sarge7 · Debian:3.1Package registry (OSV)
debian:xorg-server2:1.4.1~git20080105-2 · Debian:12Package registry (OSV)
opensuse:xorg-x11-server1.20.13-1.2 · openSUSE:TumbleweedPackage registry (OSV)
red hat:XFree860:4.1.0-86.EL · Red Hat:enterprise_linux:2.1::asPackage registry (OSV)
red hat:XFree86-100dpi-fonts0:4.1.0-86.EL · Red Hat:enterprise_linux:2.1::asPackage registry (OSV)
red hat:XFree86-75dpi-fonts0:4.1.0-86.EL · Red Hat:enterprise_linux:2.1::asPackage registry (OSV)
red hat:XFree86-cyrillic-fonts0:4.1.0-86.EL · Red Hat:enterprise_linux:2.1::asPackage registry (OSV)
red hat:XFree86-ISO8859-15-100dpi-fonts0:4.1.0-86.EL · Red Hat:enterprise_linux:2.1::asPackage registry (OSV)
red hat:XFree86-ISO8859-15-75dpi-fonts0:4.1.0-86.EL · Red Hat:enterprise_linux:2.1::asPackage registry (OSV)
red hat:XFree86-ISO8859-2-100dpi-fonts0:4.1.0-86.EL · Red Hat:enterprise_linux:2.1::asPackage registry (OSV)
red hat:XFree86-ISO8859-2-75dpi-fonts0:4.1.0-86.EL · Red Hat:enterprise_linux:2.1::asPackage registry (OSV)
red hat:XFree86-ISO8859-9-100dpi-fonts0:4.1.0-86.EL · Red Hat:enterprise_linux:2.1::asPackage registry (OSV)
red hat:XFree86-ISO8859-9-75dpi-fonts0:4.1.0-86.EL · Red Hat:enterprise_linux:2.1::asPackage registry (OSV)
red hat:XFree86-Xnest0:4.1.0-86.EL · Red Hat:enterprise_linux:2.1::asPackage registry (OSV)
red hat:XFree86-Xvfb0:4.1.0-86.EL · Red Hat:enterprise_linux:2.1::asPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
P · data can be read
Integrity
P · data or configuration can be modified
Availability
P · the service can be disrupted
Attack complexity
Low
Confidentiality impact
P
Integrity impact
P
Availability impact
P

Weakness class (CWE)

CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer

CVSS vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (19 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records