CVE-2011-0064

Pango vulnerability

CVSS

6.8

EPSS

3.3%

EPSS pct

87th

Exploited

No known

The hb_buffer_ensure function in hb-buffer.c in HarfBuzz, as used in Pango 1.28.3, Firefox, and other products, does not verify that memory reallocations succeed, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or possibly execute arbitrary code via crafted OpenType font data that triggers use of an incorrect index.

Affected vendor

Gnome

Affected product

Pango

CVSS vector

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

Published

2011-03-07

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to integrity, partial impact to availability.

Its EPSS score of 3.3% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2011-0064

Confirm whether Gnome Pango is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2011-0064.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2011-0064

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2011-0064 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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