Medium severity6.5NVD Advisory· Published Aug 10, 2020· Updated Jun 17, 2026
CVE-2020-15658
CVE-2020-15658
Description
The code for downloading files did not properly take care of special characters, which led to an attacker being able to cut off the file ending at an earlier position, leading to a different file type being downloaded than shown in the dialog. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
39unspecified+ 4 more
- (no CPE)range: unspecified
- (no CPE)range: unspecified
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*range: <79.0
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*range: <78.1
- (no CPE)range: <78.1
unspecified+ 2 more
- (no CPE)range: unspecified
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*range: <78.1
- (no CPE)range: <78.1
- osv-coords28 versionspkg:rpm/opensuse/pipewire&distro=openSUSE%20Leap%2015.2pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg:rpm/suse/MozillaFirefox&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%205pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP1pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP2pkg:rpm/suse/MozillaFirefox-branding-SLE&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP2pkg:rpm/suse/pipewire&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP2pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.2pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.1
< 0.3.6-lp152.2.3.1+ 27 more
- (no CPE)range: < 0.3.6-lp152.2.3.1
- (no CPE)range: < 78.1.0-78.87.1
- (no CPE)range: < 92.0-1.2
- (no CPE)range: < 128.5.1-1.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-3.100.2
- (no CPE)range: < 78.1.0-8.3.1
- (no CPE)range: < 78-9.2.4
- (no CPE)range: < 0.3.6-3.3.2
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-lp152.2.12.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-112.8.1
- (no CPE)range: < 78.1.0-lp151.2.61.1
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*+ 2 more
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
Patches
Vulnerability mechanics
References
6- lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.htmlnvdThird Party Advisory
- bugzilla.mozilla.org/show_bug.cginvdIssue TrackingPermissions RequiredVendor Advisory
- usn.ubuntu.com/4443-1/nvdThird Party Advisory
- www.mozilla.org/security/advisories/mfsa2020-30/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-32/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2020-33/nvdVendor Advisory
News mentions
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