CVE-2018-20030
An error when processing the EXIF_IFD_INTEROPERABILITY and EXIF_IFD_EXIF tags within libexif version 0.6.21 can be exploited to exhaust available CPU resources.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.80%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An error when processing the EXIF_IFD_INTEROPERABILITY and EXIF_IFD_EXIF tags within libexif version 0.6.21 can be exploited to exhaust available CPU resources.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 3.80% probability · 90th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- libexif project/libexif
- Source
- PSIRT-CNA@flexerasoftware.com
EPSS 3.8% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00017.html
- https://github.com/libexif/libexif/commit/6aa11df549114ebda520dde4cdaea2f9357b2c89Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/05/msg00016.html
- https://lists.debian.org/debian-lts-announce/2020/05/msg00025.html
- https://secuniaresearch.flexerasoftware.com/secunia_research/2018-28/Third Party Advisory
- https://usn.ubuntu.com/4358-1/
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00017.html
- https://github.com/libexif/libexif/commit/6aa11df549114ebda520dde4cdaea2f9357b2c89Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/05/msg00016.html
- https://lists.debian.org/debian-lts-announce/2020/05/msg00025.html
- https://secuniaresearch.flexerasoftware.com/secunia_research/2018-28/Third Party Advisory
- https://usn.ubuntu.com/4358-1/
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.