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CVE-2018-3849

In the ffghtb function in NASA CFITSIO 3.42, specially crafted images parsed via the library can...

8.8 HighFix available

In the ffghtb function in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a stack-based buffer overflow overwriting arbitrary data. An attacker can deliver an FIT image to trigger this vulnerability and potentially gain code execution.

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

3.64%Up 2.2 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 8.8

In the ffghtb function in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a stack-based buffer overflow overwriting arbitrary data. An attacker can deliver an FIT image to trigger this vulnerability and potentially gain code execution.

Record
CVE-2018-3849
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
EUVDEUVD-2018-15635 8.8

In the ffghtb function in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a stack-based buffer overflow overwriting arbitrary data. An attacker can deliver an FIT image to trigger this vulnerability and potentially gain code execution.

Record
EUVD-2018-15635
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
2026-11-03
GitHub AdvisoriesGHSA-qc33-hp9r-f794 8.8

In the ffghtb function in NASA CFITSIO 3.42, specially crafted images parsed via the library can...

In the ffghtb function in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a stack-based buffer overflow overwriting arbitrary data. An attacker can deliver an FIT image to trigger this vulnerability and potentially gain code execution.

Record
GHSA-qc33-hp9r-f794
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-787
Updated
2026-11-02
NVD 8.8

In the ffghtb function in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a stack-based buffer overflow overwriting arbitrary data. An attacker can deliver an FIT image to trigger this vulnerability and potentially gain code execution.

Record
CVE-2018-3849
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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-787
Updated
2026-11-02
OSV 8.8

In the ffghtb function in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a stack-based buffer overflow overwriting arbitrary data. An attacker can deliver an FIT image to trigger this vulnerability and potentially gain code execution.

Record
CVE-2018-3849
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2018-3849 8.8

In the ffghtb function in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a stack-based buffer overflow overwriting arbitrary data. An attacker can deliver an FIT image to trigger this vulnerability and potentially gain code execution.

Record
DEBIAN-CVE-2018-3849
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 4 moreShow less
OSVOESA-2022-1533 8.8

cfitsio security update

Library for manipulating FITS data files.

Security Fix(es):

In the ffghtb function in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a stack-based buffer overflow overwriting arbitrary data. An attacker can deliver an FIT image to trigger this vulnerability and potentially gain code execution.(CVE-2018-3849)

In the ffghbn function in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a stack-based buffer overflow overwriting arbitrary data. An attacker can deliver an FIT image to trigger this vulnerability and potentially gain code execution.(CVE-2018-3848)

Record
OESA-2022-1533
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2022-1848 8.8

cfitsio security update

Security Fix(es):

In the ffghtb function in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a stack-based buffer overflow overwriting arbitrary data. An attacker can deliver an FIT image to trigger this vulnerability and potentially gain code execution.(CVE-2018-3849)

In the ffghbn function in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a stack-based buffer overflow overwriting arbitrary data. An attacker can deliver an FIT image to trigger this vulnerability and potentially gain code execution.(CVE-2018-3848)

Record
OESA-2022-1848
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2018-3849 8.8

In the ffghtb function in NASA CFITSIO 3.42, specially crafted images parsed via the library can cause a stack-based buffer overflow overwriting arbitrary data. An attacker can deliver an FIT image to trigger this vulnerability and potentially gain code execution.

Record
UBUNTU-CVE-2018-3849
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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
OSVMGASA-2019-0133 No score

Updated cfitsio packages fix security vulnerability

CVE-2018-3846: Unsafe use of sprintf() can allow a remote unauthenticated attacker to execute arbitrary code CVE-2018-3848: Stack-based buffer overflow in ffghbn() allows for potential code execution CVE-2018-3849: Stack-based buffer overflow in ffghtb() allows for potential code execution

Record
MGASA-2019-0133
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
cfitsio
Debian:12
 before 3.430-1
3.430-1
cfitsio
Debian:13
 before 3.430-1
3.430-1
cfitsio
Debian:14
 before 3.430-1
3.430-1
cfitsio
Mageia:6
 before 3.430-1.1.mga6
3.430-1.1.mga6
cfitsio
openEuler:20.03-LTS-SP1
 before 3.490-1.oe1
3.490-1.oe1
cfitsio
openEuler:20.03-LTS-SP2
 before 3.490-1.oe1
3.490-1.oe1
cfitsio
openEuler:20.03-LTS-SP3
 before 3.490-1.oe1
3.490-1.oe1
cfitsio
openEuler:22.03-LTS
 before 3.490-1.oe2203
3.490-1.oe2203
cfitsio
Ubuntu:16.04:LTS
 All versions, plus listed versions
3.370-5
 None known

History

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

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

In short

CVE-2018-3849 is a high vulnerability (CVSS 8.8) in Nasa Cfitsio, published April 16, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.64%, the 89th percentile. Fixed in cfitsio 3.430-1.

References

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