CVE-2018-7730 — exempi: Heap-based buffer overflow in PSD_MetaHandler::CacheFileData function in XMPFiles/source/FormatSupport/PSIR_FileWriter.cpp allows for denial of service via crafted XLS file

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MEDIUM

exempi: Heap-based buffer overflow in PSD_MetaHandler::CacheFileData function in XMPFiles/source/FormatSupport/PSIR_FileWriter.cpp allows for denial of service via crafted XLS file

Published Mar 6, 2018

5.5

MEDIUM

CVSS 3.0

EPSS 1.40%

Description

An issue was discovered in Exempi through 2.4.4. A certain case of a 0xffffffff length is mishandled in XMPFiles/source/FormatSupport/PSIR_FileWriter.cpp, leading to a heap-based buffer over-read in the PSD_MetaHandler::CacheFileData() function.

Affected products

Red Hat Enterprise Linux 7

exempi-0:2.2.0-9.el7

Fixed · RHSA-2019:2048
Red Hat Enterprise Linux 6

exempi

Will not fix
Red Hat Enterprise Linux 8

exempi

Not affected

Product	Package	State	Advisory
Red Hat Enterprise Linux 7	exempi-0:2.2.0-9.el7	Fixed	RHSA-2019:2048
Red Hat Enterprise Linux 6	exempi	Will not fix	n/a
Red Hat Enterprise Linux 8	exempi	Not affected	n/a

Remediation

No remediation recorded yet.

Metrics

1.40% 0.01398

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.

EPSS probability 0.01398

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3
EPSS v4

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3
EPSS v4

Table of values (10 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 2, 2026	1.40% (0.01398)	71.48th	v5 (v2026.06.15)
Jun 15, 2026	1.45% (0.01447)	69.79th	v5 (v2026.06.15)
Mar 17, 2025	0.28% (0.00277)	49.08th	v4 (v2025.03.14)
Dec 12, 2024	0.12% (0.00116)	46.98th	v3 (v2023.03.01)
Jul 10, 2024	0.12% (0.00116)	45.76th	v3 (v2023.03.01)
Mar 7, 2023	0.12% (0.00116)	43.71th	v3 (v2023.03.01)
Mar 6, 2023	1.11% (0.01108)	55.18th	v2 (v2022.01.01)
Feb 4, 2022	1.11% (0.01108)	29.61th	v2 (v2022.01.01)
Feb 3, 2022	1.45% (0.01454)	32.67th	v5 (v2026.06.15)
Apr 14, 2021	1.45% (0.01454)	0.00th	v1

Weaknesses (2)

CWE-125

Out-of-bounds Read

CWE-190

Integer Overflow

References (10)

https://access.redhat.com/errata/RHSA-2019:2048
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2018-7730
Vendor Advisory
https://bugs.freedesktop.org/show_bug.cgi?id=105204
x_refsource_MISCExploitIssue TrackingThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1555163
Issue Tracking
https://cgit.freedesktop.org/exempi/commit/?id=6cbd34025e5fd3ba47b29b602096e456507ce83b
x_refsource_MISCPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/03/msg00013.html
mailing-listx_refsource_MLISTMailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BCFXKOOATZ2B5G3G7EBXZWVZHEABN4ZV/
vendor-advisoryx_refsource_FEDORA
https://nvd.nist.gov/vuln/detail/CVE-2018-7730
https://usn.ubuntu.com/3668-1/
vendor-advisoryx_refsource_UBUNTUThird Party Advisory
https://www.cve.org/CVERecord?id=CVE-2018-7730

Link	Providers	Tags
https://access.redhat.com/errata/RHSA-2019:2048		vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2018-7730		Vendor Advisory
https://bugs.freedesktop.org/show_bug.cgi?id=105204		x_refsource_MISCExploitIssue TrackingThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1555163		Issue Tracking
https://cgit.freedesktop.org/exempi/commit/?id=6cbd34025e5fd3ba47b29b602096e456507ce83b		x_refsource_MISCPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/03/msg00013.html		mailing-listx_refsource_MLISTMailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BCFXKOOATZ2B5G3G7EBXZWVZHEABN4ZV/		vendor-advisoryx_refsource_FEDORA
https://nvd.nist.gov/vuln/detail/CVE-2018-7730
https://usn.ubuntu.com/3668-1/		vendor-advisoryx_refsource_UBUNTUThird Party Advisory
https://www.cve.org/CVERecord?id=CVE-2018-7730