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CVE-2021-20307

Format string vulnerability in panoFileOutputNamesCreate() in libpano13 2.9.20~rc2+dfsg-3 and...

9.8 CriticalFix available

Format string vulnerability in panoFileOutputNamesCreate() in libpano13 2.9.20~rc2+dfsg-3 and earlier can lead to read and write arbitrary memory values.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

1.94%Up 1.1 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 9.8

Format string vulnerability in panoFileOutputNamesCreate() in libpano13 2.9.20~rc2+dfsg-3 and earlier can lead to read and write arbitrary memory values.

Record
CVE-2021-20307
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-134
Updated
2026-11-02
CVE List No score

Format string vulnerability in panoFileOutputNamesCreate() in libpano13 2.9.20~rc2+dfsg-3 and earlier can lead to read and write arbitrary memory values.

Record
CVE-2021-20307
Weakness
CWE-134
Updated
2026-11-02
EUVDEUVD-2021-7732 No score

Format string vulnerability in panoFileOutputNamesCreate() in libpano13 2.9.20~rc2+dfsg-3 and earlier can lead to read and write arbitrary memory values.

Record
EUVD-2021-7732
Updated
2026-11-03
GitHub AdvisoriesGHSA-jj4v-f22v-8gx6 9.8

Format string vulnerability in panoFileOutputNamesCreate() in libpano13 2.9.20~rc2+dfsg-3 and...

Format string vulnerability in panoFileOutputNamesCreate() in libpano13 2.9.20~rc2+dfsg-3 and earlier can lead to read and write arbitrary memory values.

Record
GHSA-jj4v-f22v-8gx6
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-134
Updated
2026-11-02
OSV 9.8

Format string vulnerability in panoFileOutputNamesCreate() in libpano13 2.9.20~rc2+dfsg-3 and earlier can lead to read and write arbitrary memory values.

Record
CVE-2021-20307
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2021-20307 9.8

Format string vulnerability in panoFileOutputNamesCreate() in libpano13 2.9.20~rc2+dfsg-3 and earlier can lead to read and write arbitrary memory values.

Record
DEBIAN-CVE-2021-20307
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 4 moreShow less
OSVUBUNTU-CVE-2021-20307 9.8

Format string vulnerability in panoFileOutputNamesCreate() in libpano13 2.9.20~rc2+dfsg-3 and earlier can lead to read and write arbitrary memory values.

Record
UBUNTU-CVE-2021-20307
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVMGASA-2021-0230 No score

Updated libpano13 packages fix a security vulnerability

Format string vulnerability in panoFileOutputNamesCreate() in libpano13 2.9.20.rc2 and earlier can lead to read and write arbitrary memory values (CVE-2021-20307).

Record
MGASA-2021-0230
Updated
2026-11-02
OSVopenSUSE-SU-2024:10968-1 No score

libpano-devel-2.9.20-1.3 on GA media

These are all security issues fixed in the libpano-devel-2.9.20-1.3 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10968-1
Updated
2026-11-02
OSVUSN-6163-1 No score

pano13 vulnerabilities

It was discovered that pano13 did not properly validate the prefix provided for PTcrop's output. An attacker could use this issue to cause pano13 to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2021-20307)

It was discovered that pano13 did not properly handle certain crafted TIFF images. An attacker could use this issue to cause pano13 to crash, resulting in a denial of service. (CVE-2021-33293)

Record
USN-6163-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
libpano13
Debian:12
 before 2.9.20~rc3+dfsg-1
2.9.20~rc3+dfsg-1
libpano13
Debian:13
 before 2.9.20~rc3+dfsg-1
2.9.20~rc3+dfsg-1
libpano13
Debian:14
 before 2.9.20~rc3+dfsg-1
2.9.20~rc3+dfsg-1
libpano13
Debian:9
 before 2.9.19+dfsg-2+deb9u1, plus listed versions
2.9.19+dfsg-2
2.9.19+dfsg-2+deb9u1
libpano13
Mageia:7
 before 2.9.20-1.mga7
2.9.20-1.mga7
libpano13
Mageia:7
 before 2.9.20-1.mga7.tainted
2.9.20-1.mga7.tainted
libpano13
Mageia:8
 before 2.9.20-1.mga8
2.9.20-1.mga8
libpano13
Mageia:8
 before 2.9.20-1.mga8.tainted
2.9.20-1.mga8.tainted
libpano13
Ubuntu:Pro:16.04:LTS
 before 2.9.19+dfsg-2ubuntu0.1~esm1, plus listed versions
2.9.19+dfsg-12.9.19+dfsg-2
2.9.19+dfsg-2ubuntu0.1~esm1
libpano13
Ubuntu:Pro:18.04:LTS
 before 2.9.19+dfsg-3ubuntu0.18.04.1~esm1, plus listed versions
2.9.19+dfsg-2build12.9.19+dfsg-3
2.9.19+dfsg-3ubuntu0.18.04.1~esm1
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Affected packages
PackageAffectedFixed
libpano13
Ubuntu:20.04:LTS
 before 2.9.19+dfsg-3ubuntu0.20.04.1, plus listed versions
2.9.19+dfsg-3
2.9.19+dfsg-3ubuntu0.20.04.1
libpano13
Ubuntu:Pro:22.04:LTS
 before 2.9.20~rc3+dfsg-1ubuntu0.1~esm1, plus listed versions
2.9.20~rc3+dfsg-1
2.9.20~rc3+dfsg-1ubuntu0.1~esm1
libpano13
Ubuntu:Pro:14.04:LTS
From an advisory covering 2 CVEs
 before 2.9.18+dfsg-6ubuntu2+esm1, plus listed versions
2.9.18+dfsg-6ubuntu12.9.18+dfsg-6ubuntu2
2.9.18+dfsg-6ubuntu2+esm1
libpano13
Ubuntu:Pro:16.04:LTS
From an advisory covering 2 CVEs
 before 2.9.19+dfsg-2ubuntu0.1~esm1, plus listed versions
2.9.19+dfsg-12.9.19+dfsg-2
2.9.19+dfsg-2ubuntu0.1~esm1
libpano13
Ubuntu:Pro:18.04:LTS
From an advisory covering 2 CVEs
 before 2.9.19+dfsg-3ubuntu0.18.04.1~esm1, plus listed versions
2.9.19+dfsg-2build12.9.19+dfsg-3
2.9.19+dfsg-3ubuntu0.18.04.1~esm1
libpano13
Ubuntu:20.04:LTS
From an advisory covering 2 CVEs
 before 2.9.19+dfsg-3ubuntu0.20.04.1, plus listed versions
2.9.19+dfsg-3
2.9.19+dfsg-3ubuntu0.20.04.1
libpano13
Ubuntu:Pro:22.04:LTS
From an advisory covering 2 CVEs
 before 2.9.20~rc3+dfsg-1ubuntu0.1~esm1, plus listed versions
2.9.20~rc3+dfsg-1
2.9.20~rc3+dfsg-1ubuntu0.1~esm1

History

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

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

In short

CVE-2021-20307 is a critical vulnerability (CVSS 9.8) in Libpano13, published April 5, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.94%, the 80th percentile. Fixed in libpano13 2.9.20~rc3+dfsg-1.

References

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