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CVE-2015-1802: The bdfReadProperties function in bitmap/bdfread.c in X.Org libXfont before 1.4.9 and 1.5.x before 1.5.1 allows remote authenticated users…

HighCVSS 8.5 · v2.0—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 35/100)

  • 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: 4.8% (FIRST EPSS); higher than 92.1% of all records.
  • Fixed version: libxfont (Debian:12) 1:1.5.1-1; libxfont (Debian:6.0) 1:1.4.1-5+deb6u1; libxfont (Debian:7) 1:1.4.5-5.

Low priority for now. Upgrade to libxfont (Debian:12) 1:1.5.1-1; libxfont (Debian:6.0) 1:1.4.1-5+deb6u1; libxfont (Debian:7) 1:1.4.5-5 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

Primary sources: NVD · CVE.org · FIRST EPSS

The bdfReadProperties function in bitmap/bdfread.c in X.Org libXfont before 1.4.9 and 1.5.x before 1.5.1 allows remote authenticated users to cause a denial of service (out-of-bounds write and crash) or possibly execute arbitrary code via a (1) negative or (2) large property count in a BDF font file.

Published
Mar 20, 2015
Updated
Jun 16, 2026
EPSS
4.8% · 92th percentile

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
34 / 40 · 8.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 4.8%

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  • Not in KEV: no record of exploitation in the wild
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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
xlibxfont
canonicalubuntu linux
debiandebian linux

Affected versions

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

  • x libxfontup to 1.4.8 inclusive
  • x libxfont1.5.0

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12libxfontbefore 1:1.5.1-11:1.5.1-1
Debian:6.0libxfontbefore 1:1.4.1-5+deb6u11:1.4.1-5+deb6u1
Debian:7libxfontbefore 1:1.4.5-51:1.4.5-5
Red Hat:enterprise_linux:6::clientlibXfontbefore 0:1.4.5-5.el6_70:1.4.5-5.el6_7
Red Hat:enterprise_linux:6::clientlibXfont-debuginfobefore 0:1.4.5-5.el6_70:1.4.5-5.el6_7
Red Hat:enterprise_linux:6::clientlibXfont-develbefore 0:1.4.5-5.el6_70:1.4.5-5.el6_7
Red Hat:enterprise_linux:7::clientlibXfontbefore 0:1.4.7-3.el7_10:1.4.7-3.el7_1
Red Hat:enterprise_linux:7::clientlibXfont-debuginfobefore 0:1.4.7-3.el7_10:1.4.7-3.el7_1
Red Hat:enterprise_linux:7::clientlibXfont-develbefore 0:1.4.7-3.el7_10:1.4.7-3.el7_1
Red Hat:enterprise_linux:7::serverlibXfontbefore 0:1.4.7-3.ael7b_10:1.4.7-3.ael7b_1
Red Hat:enterprise_linux:7::serverlibXfont-debuginfobefore 0:1.4.7-3.ael7b_10:1.4.7-3.ael7b_1
Red Hat:enterprise_linux:7::serverlibXfont-develbefore 0:1.4.7-3.ael7b_10:1.4.7-3.ael7b_1
SUSE:Linux Enterprise Desktop 12libXfontbefore 1.4.7-4.11.4.7-4.1

Same product

x: all records

Other highest-scoring records for the same primary product.

  • CVE-2007-5199A single byte overflow in catalogue.c in X.Org libXfont 1.3.1 allows remote attackers to have unspecified impact.
    40Plan
  • CVE-2013-6462Stack-based buffer overflow in the bdfReadCharacters function in bitmap/bdfread.c in X.Org libXfont 1.1 through 1.4.6 allows remote…
    40Plan
  • CVE-2011-2895The LZW decompressor in (1) the BufCompressedFill function in fontfile/decompress.c in X.Org libXfont before 1.4.4 and (2)…
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2014-0210May 15, 2014 · Multiple buffer overflows in X.Org libXfont before 1.4.8 and 1.4.9x before 1.4.99.901 allow remote font servers to execute arbitrary code…
    31Monitor
  • ← EarlierCVE-2014-0211May 15, 2014 · Multiple integer overflows in the (1) fs_get_reply, (2) fs_alloc_glyphs, and (3) fs_read_extent_info functions in X.Org libXfont before 1.4.
    31Monitor
  • Later →CVE-2015-1803Mar 20, 2015 · The bdfReadCharacters function in bitmap/bdfread.c in X.Org libXfont before 1.4.9 and 1.5.x before 1.5.1 does not properly handle character…
    35Monitor

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:libxfont1:1.5.1-1 · Debian:12Package registry (OSV)
red hat:libXfont0:1.4.5-5.el6_7 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:libXfont-debuginfo0:1.4.5-5.el6_7 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:libXfont-devel0:1.4.5-5.el6_7 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
suse:libXfont1.4.7-4.1 · SUSE:Linux Enterprise Desktop 12Package 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.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

    If successful

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

    Weakness class (CWE)

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

    CVSS vector

    AV:N/AC:M/Au:S/C:C/I:C/A:C

    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

    —

    References

    Show all references (15 more)

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

    All records