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CVE-2018-7439

An issue was discovered in FreeXL before 1.0.5. There is a heap-based buffer over-read in the...

8.8 HighFix available

An issue was discovered in FreeXL before 1.0.5. There is a heap-based buffer over-read in the function read_mini_biff_next_record.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

2.14%Up 0.9 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 8.8

An issue was discovered in FreeXL before 1.0.5. There is a heap-based buffer over-read in the function read_mini_biff_next_record.

Record
CVE-2018-7439
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-125
Updated
2026-11-02
CVE List No score

An issue was discovered in FreeXL before 1.0.5. There is a heap-based buffer over-read in the function read_mini_biff_next_record.

Record
CVE-2018-7439
Updated
2026-11-02
EUVDEUVD-2018-19170 No score

An issue was discovered in FreeXL before 1.0.5. There is a heap-based buffer over-read in the function read_mini_biff_next_record.

Record
EUVD-2018-19170
Updated
2026-11-03
GitHub AdvisoriesGHSA-47f5-hp48-c8jx 8.8

An issue was discovered in FreeXL before 1.0.5. There is a heap-based buffer over-read in the...

An issue was discovered in FreeXL before 1.0.5. There is a heap-based buffer over-read in the function read_mini_biff_next_record.

Record
GHSA-47f5-hp48-c8jx
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-125
Updated
2026-11-02
OSV 8.8

An issue was discovered in FreeXL before 1.0.5. There is a heap-based buffer over-read in the function read_mini_biff_next_record.

Record
CVE-2018-7439
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2018-7439 8.8

An issue was discovered in FreeXL before 1.0.5. There is a heap-based buffer over-read in the function read_mini_biff_next_record.

Record
DEBIAN-CVE-2018-7439
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 4 moreShow less
OSVUBUNTU-CVE-2018-7439 8.8

An issue was discovered in FreeXL before 1.0.5. There is a heap-based buffer over-read in the function read_mini_biff_next_record.

Record
UBUNTU-CVE-2018-7439
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2018:0569-1 No score

Security update for freexl

This update for freexl fixes the following issues:

freexl was updated to version 1.0.5:

  • No changelog provided by upstream

  • Various heapoverflows in 1.0.4 have been fixed:

    • CVE-2018-7439: heap-buffer-overflow in freexl.c:3912 read_mini_biff_next_record (boo#1082774)
    • CVE-2018-7438: heap-buffer-overflow in freexl.c:383 parse_unicode_string (boo#1082775)
    • CVE-2018-7437: heap-buffer-overflow in freexl.c:1866 parse_SST(boo#1082776)
    • CVE-2018-7436: heap-buffer-overflow in freexl.c:1805 parse_SST parse_SST (boo#1082777)
    • CVE-2018-7435: heap-buffer-overflow in freexl::destroy_cell (boo#1082778)
Record
openSUSE-SU-2018:0569-1
Updated
2026-11-02
OSVopenSUSE-SU-2018:0570-1 No score

Security update for freexl

This update for freexl fixes the following issues:

freexl was updated to version 1.0.5:

  • No changelog provided by upstream

  • Various heapoverflows in 1.0.4 have been fixed:

    • CVE-2018-7439: heap-buffer-overflow in freexl.c:3912 read_mini_biff_next_record (boo#1082774)
    • CVE-2018-7438: heap-buffer-overflow in freexl.c:383 parse_unicode_string (boo#1082775)
    • CVE-2018-7437: heap-buffer-overflow in freexl.c:1866 parse_SST(boo#1082776)
    • CVE-2018-7436: heap-buffer-overflow in freexl.c:1805 parse_SST parse_SST (boo#1082777)
    • CVE-2018-7435: heap-buffer-overflow in freexl::destroy_cell (boo#1082778)
Record
openSUSE-SU-2018:0570-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10771-1 No score

freexl-devel-1.0.6-1.3 on GA media

These are all security issues fixed in the freexl-devel-1.0.6-1.3 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10771-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
freexl
Debian:12
 before 1.0.5-1
1.0.5-1
freexl
Debian:13
 before 1.0.5-1
1.0.5-1
freexl
Debian:14
 before 1.0.5-1
1.0.5-1
freexl
Debian:7
From an advisory covering 5 CVEs
 before 1.0.0b-1+deb7u5, plus listed versions
1.0.0b-11.0.0b-1+deb7u11.0.0b-1+deb7u21.0.0b-1+deb7u31.0.0b-1+deb7u4
1.0.0b-1+deb7u5
freexl
Debian:8
From an advisory covering 5 CVEs
 before 1.0.0g-1+deb8u5, plus listed versions
1.0.0g-1+deb8u11.0.0g-1+deb8u21.0.0g-1+deb8u31.0.0g-1+deb8u4
1.0.0g-1+deb8u5
freexl
Debian:9
From an advisory covering 5 CVEs
 before 1.0.2-2+deb9u2, plus listed versions
1.0.2-21.0.2-2+deb9u1
1.0.2-2+deb9u2
freexl
Ubuntu:14.04:LTS
 before 1.0.0g-1ubuntu0.14.04.3, plus listed versions
1.0.0d-11.0.0f-11.0.0f-21.0.0g-11.0.0g-1ubuntu0.14.04.11.0.0g-1ubuntu0.14.04.2
1.0.0g-1ubuntu0.14.04.3
freexl
Ubuntu:16.04:LTS
 before 1.0.2-1ubuntu0.1, plus listed versions
1.0.2-1
1.0.2-1ubuntu0.1
freexl
SUSE:Package Hub 12
From an advisory covering 5 CVEs
 before 1.0.5-8.1
1.0.5-8.1
freexl
openSUSE:Tumbleweed
From an advisory covering 7 CVEs
 before 1.0.6-1.3
1.0.6-1.3

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-7439 is a high vulnerability (CVSS 8.8) in Freexl Project Freexl, published February 23, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.14%, the 82nd percentile. Fixed in freexl 1.0.5-1.

References

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