pango: Heap-based buffer overflow by rendering glyph box for certain FT_Bitmap objects
Published Jan 24, 2011
7.6
HIGHCVSS 2.0
EPSS 18.94%
Description
Heap-based buffer overflow in the pango_ft2_font_render_box_glyph function in pango/pangoft2-render.c in libpango in Pango 1.28.3 and earlier, when the FreeType2 backend is enabled, allows user-assisted remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted font file, related to the glyph box for an FT_Bitmap object.
Affected products
No data.
- ≤ 1.28.3
- 1.28.0
- 1.28.1
- 1.28.2
- 0.20
- 0.21
- 0.22
- 0.23
- 0.24
- 0.25
- 0.26
- 1.0
- 1.1
- 1.2
- 1.3
- 1.4
- 1.5
- 1.6
- 1.7
- 1.8
- 1.9
- 1.10
- 1.11
- 1.12
- 1.13
- 1.14
- 1.15
- 1.16
- 1.17
- 1.18
- 1.19
- 1.20
- 1.21
- 1.22
- 1.23
- 1.24
- 1.25
- 1.26
- 1.27
No data.
Red Hat Enterprise Linux 4
evolution28-pango-0:1.14.9-13.el4_10
Fixed · RHSA-2011:0180
Red Hat Enterprise Linux 5
pango-0:1.14.9-8.el5_6.2
Fixed · RHSA-2011:0180
Red Hat Enterprise Linux 6
pango-0:1.28.1-3.el6_0.3
Fixed · RHSA-2011:0180
Red Hat Enterprise Linux 4
pango
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | evolution28-pango-0:1.14.9-13.el4_10 | Fixed | RHSA-2011:0180 |
| Red Hat Enterprise Linux 5 | pango-0:1.14.9-8.el5_6.2 | Fixed | RHSA-2011:0180 |
| Red Hat Enterprise Linux 6 | pango-0:1.28.1-3.el6_0.3 | Fixed | RHSA-2011:0180 |
| Red Hat Enterprise Linux 4 | pango | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:H/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 18.94% (0.18944) | 97.22th | v5 (v2026.06.15) |
| Jun 15, 2026 | 18.94% (0.18944) | 96.93th | v5 (v2026.06.15) |
| Oct 3, 2025 | 6.46% (0.06463) | 90.73th | v4 (v2025.03.14) |
| May 30, 2025 | 7.84% (0.07842) | 91.51th | v4 (v2025.03.14) |
| May 13, 2025 | 8.96% (0.08955) | 92.13th | v4 (v2025.03.14) |
| Mar 30, 2025 | 10.99% (0.10992) | 92.79th | v4 (v2025.03.14) |
| Mar 29, 2025 | 5.87% (0.05873) | 83.86th | v4 (v2025.03.14) |
| Mar 17, 2025 | 10.99% (0.10992) | 92.89th | v4 (v2025.03.14) |
| Dec 17, 2024 | 12.80% (0.12795) | 95.46th | v3 (v2023.03.01) |
| Sep 16, 2024 | 17.54% (0.17536) | 96.23th | v3 (v2023.03.01) |
| Jul 25, 2023 | 18.56% (0.18559) | 95.53th | v3 (v2023.03.01) |
| Jun 2, 2023 | 13.60% (0.13596) | 94.78th | v3 (v2023.03.01) |
| Mar 7, 2023 | 11.98% (0.11977) | 94.40th | v3 (v2023.03.01) |
| Mar 6, 2023 | 34.39% (0.34394) | 97.70th | v2 (v2022.01.01) |
| Feb 13, 2023 | 34.39% (0.34394) | 97.69th | v2 (v2022.01.01) |
| Feb 3, 2023 | 12.57% (0.12567) | 95.36th | v2 (v2022.01.01) |
| Feb 4, 2022 | 34.39% (0.34394) | 96.68th | v2 (v2022.01.01) |
References (18)
- http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html vendor-advisoryx_refsource_SUSE
- http://openwall.com/lists/oss-security/2011/01/18/6 mailing-listx_refsource_MLISTExploit
- http://openwall.com/lists/oss-security/2011/01/20/2 mailing-listx_refsource_MLISTExploit
- http://osvdb.org/70596 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/42934 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/43100 third-party-advisoryx_refsource_SECUNIA
- http://www.redhat.com/support/errata/RHSA-2011-0180.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/bid/45842 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1024994 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2011/0186 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2011/0238 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2011-0020 Vendor Advisory
- https://bugs.launchpad.net/ubuntu/+source/pango1.0/+bug/696616 x_refsource_CONFIRMExploit
- https://bugzilla.gnome.org/show_bug.cgi?id=639882 x_refsource_MISC
- https://bugzilla.redhat.com/show_bug.cgi?id=671122 x_refsource_CONFIRMExploitIssue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64832 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2011-0020
- https://www.cve.org/CVERecord?id=CVE-2011-0020
Change history (0)
No recorded changes yet.