libpng: underflow read in png_check_keyword()
Published Apr 14, 2016
8.8
HIGHCVSS 3.0
EPSS 6.48%
Description
Integer underflow in the png_check_keyword function in pngwutil.c in libpng 0.90 through 0.99, 1.0.x before 1.0.66, 1.1.x and 1.2.x before 1.2.56, 1.3.x and 1.4.x before 1.4.19, and 1.5.x before 1.5.26 allows remote attackers to have unspecified impact via a space character as a keyword in a PNG image, which triggers an out-of-bounds read.
Affected products
No data.
Configuration 1
- 5.0
- 6.0
- 6.0
- 5.0
- 6.0
- 6.0
Configuration 2
- 1.2.0
- 1.2.1
- 1.2.2
- 1.2.3
- 1.2.4
- 1.2.5
- 1.2.6
- 1.2.7
- 1.2.8
- 1.2.9
- 1.2.10
- 1.2.11
- 1.2.12
- 1.2.13
- 1.2.14
- 1.2.15
- 1.2.16
- 1.2.17
- 1.2.18
- 1.2.19
- 1.2.20
- 1.2.21
- 1.2.22
- 1.2.23
- 1.2.24
- 1.2.25
- 1.2.26
- 1.2.27
- 1.2.28
- 1.2.29
- 1.2.30
- 1.2.31
- 1.2.32
- 1.2.33
- 1.2.34
- 1.2.35
- 1.2.36
- 1.2.37
- 1.2.38
- 1.2.39
- 1.2.40
- 1.2.41
- 1.2.42
- 1.2.43
- 1.2.43
- 1.2.44
- 1.2.45
- 1.2.45
- 1.2.46
- 1.2.46
- 1.2.47
- 1.2.47
- 1.2.48
- 1.2.48
- 1.2.49
- 1.2.50
- 1.2.51
- 1.2.52
- 1.2.53
- 1.2.54
- 1.2.55
Configuration 4
- 1.0.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.5
- 1.0.6
- 1.0.7
- 1.0.8
- 1.0.9
- 1.0.10
- 1.0.11
- 1.0.12
- 1.0.13
- 1.0.14
- 1.0.15
- 1.0.16
- 1.0.17
- 1.0.18
- 1.0.19
- 1.0.20
- 1.0.21
- 1.0.22
- 1.0.23
- 1.0.24
- 1.0.25
- 1.0.26
- 1.0.27
- 1.0.28
- 1.0.29
- 1.0.30
- 1.0.31
- 1.0.32
- 1.0.33
- 1.0.34
- 1.0.35
- 1.0.37
- 1.0.38
- 1.0.39
- 1.0.40
- 1.0.41
- 1.0.42
- 1.0.43
- 1.0.44
- 1.0.45
- 1.0.46
- 1.0.47
- 1.0.48
- 1.0.50
- 1.0.51
- 1.0.52
- 1.0.53
- 1.0.54
- 1.0.55
- 1.0.55
- 1.0.56
- 1.0.56
- 1.0.57
- 1.0.57
- 1.0.58
- 1.0.59
- 1.0.60
- 1.0.61
- 1.0.62
- 1.0.63
- 1.0.64
- 1.0.65
Configuration 5
- 23
Configuration 6
- 6.0
Configuration 7
- 1.4.0
- 1.4.1
- 1.4.2
- 1.4.3
- 1.4.4
- 1.4.5
- 1.4.6
- 1.4.7
- 1.4.8
- 1.4.9
- 1.4.10
- 1.4.11
- 1.4.12
- 1.4.13
- 1.4.14
- 1.4.15
- 1.4.16
- 1.4.17
- 1.4.18
Configuration 8
Configuration 9
- 1.5.0
- 1.5.1
- 1.5.1
- 1.5.2
- 1.5.2
- 1.5.3
- 1.5.4
- 1.5.4
- 1.5.5
- 1.5.5
- 1.5.6
- 1.5.6
- 1.5.7
- 1.5.7
- 1.5.8
- 1.5.8
- 1.5.9
- 1.5.9
- 1.5.10
- 1.5.11
- 1.5.11
- 1.5.12
- 1.5.13
- 1.5.13
- 1.5.14
- 1.5.15
- 1.5.16
- 1.5.17
- 1.5.18
- 1.5.19
- 1.5.20
- 1.5.21
- 1.5.22
- 1.5.23
- 1.5.24
- 1.5.25
No data.
Red Hat Enterprise Linux 5 Supplementary
java-1.6.0-ibm-1:1.6.0.16.20-1jpp.1.el5
Fixed · RHSA-2016:0101
Red Hat Enterprise Linux 5 Supplementary
java-1.7.0-ibm-1:1.7.0.9.30-1jpp.1.el5
Fixed · RHSA-2016:0100
Red Hat Enterprise Linux 6 Supplementary
java-1.6.0-ibm-1:1.6.0.16.20-1jpp.1.el6_7
Fixed · RHSA-2016:0101
Red Hat Enterprise Linux 6 Supplementary
java-1.7.1-ibm-1:1.7.1.3.30-1jpp.2.el6_7
Fixed · RHSA-2016:0099
Red Hat Enterprise Linux 7 Supplementary
java-1.7.1-ibm-1:1.7.1.3.30-1jpp.1.el7
Fixed · RHSA-2016:0099
Red Hat Satellite 5.6
java-1.7.0-ibm-1:1.7.0.9.40-1jpp.1.el5
Fixed · RHSA-2016:1430
Red Hat Satellite 5.6
java-1.7.1-ibm-1:1.7.1.3.40-1jpp.1.el6_7
Fixed · RHSA-2016:1430
Red Hat Satellite 5.6
spacewalk-java-0:2.0.2-109.el5sat
Fixed · RHSA-2016:1430
Red Hat Satellite 5.7
java-1.7.1-ibm-1:1.7.1.3.40-1jpp.1.el6_7
Fixed · RHSA-2016:1430
Red Hat Satellite 5.7
spacewalk-java-0:2.3.8-146.el6sat
Fixed · RHSA-2016:1430
Red Hat Enterprise Linux 5
libpng
Will not fix
Red Hat Enterprise Linux 6
libpng
Will not fix
Red Hat Enterprise Linux 7
libpng
Will not fix
Red Hat Enterprise Linux 7
libpng12
Will not fix
Red Hat Enterprise Linux 8
libpng
Not affected
Red Hat Enterprise Linux 8
libpng12
Will not fix
Red Hat Enterprise Linux 8
libpng15
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 Supplementary | java-1.6.0-ibm-1:1.6.0.16.20-1jpp.1.el5 | Fixed | RHSA-2016:0101 |
| Red Hat Enterprise Linux 5 Supplementary | java-1.7.0-ibm-1:1.7.0.9.30-1jpp.1.el5 | Fixed | RHSA-2016:0100 |
| Red Hat Enterprise Linux 6 Supplementary | java-1.6.0-ibm-1:1.6.0.16.20-1jpp.1.el6_7 | Fixed | RHSA-2016:0101 |
| Red Hat Enterprise Linux 6 Supplementary | java-1.7.1-ibm-1:1.7.1.3.30-1jpp.2.el6_7 | Fixed | RHSA-2016:0099 |
| Red Hat Enterprise Linux 7 Supplementary | java-1.7.1-ibm-1:1.7.1.3.30-1jpp.1.el7 | Fixed | RHSA-2016:0099 |
| Red Hat Satellite 5.6 | java-1.7.0-ibm-1:1.7.0.9.40-1jpp.1.el5 | Fixed | RHSA-2016:1430 |
| Red Hat Satellite 5.6 | java-1.7.1-ibm-1:1.7.1.3.40-1jpp.1.el6_7 | Fixed | RHSA-2016:1430 |
| Red Hat Satellite 5.6 | spacewalk-java-0:2.0.2-109.el5sat | Fixed | RHSA-2016:1430 |
| Red Hat Satellite 5.7 | java-1.7.1-ibm-1:1.7.1.3.40-1jpp.1.el6_7 | Fixed | RHSA-2016:1430 |
| Red Hat Satellite 5.7 | spacewalk-java-0:2.3.8-146.el6sat | Fixed | RHSA-2016:1430 |
| Red Hat Enterprise Linux 5 | libpng | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | libpng | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | libpng | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | libpng12 | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | libpng | Not affected | n/a |
| Red Hat Enterprise Linux 8 | libpng12 | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | libpng15 | 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.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
AV:N/AC:M/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 (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.48% (0.06484) | 93.55th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.48% (0.06484) | 92.85th | v5 (v2026.06.15) |
| Jan 20, 2026 | 14.32% (0.14316) | 94.20th | v4 (v2025.03.14) |
| Aug 20, 2025 | 13.30% (0.13302) | 93.89th | v4 (v2025.03.14) |
| Jul 13, 2025 | 17.05% (0.17054) | 94.67th | v4 (v2025.03.14) |
| May 2, 2025 | 15.42% (0.15422) | 94.28th | v4 (v2025.03.14) |
| Apr 21, 2025 | 17.05% (0.17054) | 94.56th | v4 (v2025.03.14) |
| Apr 17, 2025 | 15.42% (0.15422) | 94.22th | v4 (v2025.03.14) |
| Mar 30, 2025 | 17.50% (0.17503) | 94.54th | v4 (v2025.03.14) |
| Mar 29, 2025 | 28.78% (0.28781) | 94.53th | v4 (v2025.03.14) |
| Mar 19, 2025 | 17.50% (0.17503) | 94.31th | v4 (v2025.03.14) |
| Mar 17, 2025 | 13.99% (0.13988) | 93.81th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.24% (0.02236) | 89.94th | v3 (v2023.03.01) |
| Dec 1, 2023 | 2.24% (0.02236) | 88.30th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.06% (0.02063) | 87.24th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.93% (0.03932) | 85.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.93% (0.03932) | 84.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.93% (0.03932) | 67.70th | v2 (v2022.01.01) |
References (23)
- http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174435.html vendor-advisoryx_refsource_FEDORA
- http://sourceforge.net/p/libpng/bugs/244/ x_refsource_CONFIRM
- http://sourceforge.net/p/libpng/code/ci/d9006f683c641793252d92254a75ae9b815b42ed/ x_refsource_CONFIRM
- http://sourceforge.net/projects/libpng/files/libpng10/1.0.66/ x_refsource_CONFIRMPatch
- http://sourceforge.net/projects/libpng/files/libpng12/1.2.56/ x_refsource_CONFIRMPatch
- http://sourceforge.net/projects/libpng/files/libpng14/1.4.19/ x_refsource_CONFIRMPatch
- http://sourceforge.net/projects/libpng/files/libpng15/1.5.26/ x_refsource_CONFIRMPatch
- http://www.debian.org/security/2016/dsa-3443 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2015/12/10/6 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2015/12/10/7 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2015/12/11/1 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2015/12/11/2 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2015/12/17/10 mailing-listx_refsource_MLIST
- http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/80592 vdb-entryx_refsource_BID
- https://access.redhat.com/errata/RHSA-2016:1430 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2015-8540 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1291312 Issue Tracking
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2015-8540
- https://security.gentoo.org/glsa/201611-08 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2015-8540
Change history (0)
No recorded changes yet.