CVE-2015-6525 Multiple integer overflows in the evbuffer API in Libevent 2.0.x before 2.0.22 and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspeci...
HighCVSS 7.5
EPSS 4.8%
- Published
- Updated
- Exploit status
- No public exploit known
Description
Multiple integer overflows in the evbuffer API in Libevent 2.0.x before 2.0.22 and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via "insanely large inputs" to the (1) evbuffer_add, (2) evbuffer_prepend, (3) evbuffer_expand, (4) exbuffer_reserve_space, or (5) evbuffer_read function, which triggers a heap-based buffer overflow or an infinite loop. NOTE: this identifier was SPLIT from CVE-2014-6272 per ADT3 due to different affected versions.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| debian/libevent(Debian:12) | < 2.0.21-stable-2 | 2.0.21-stable-2 |
| debian/libevent(Debian:13) | < 2.0.21-stable-2 | 2.0.21-stable-2 |
| debian/libevent(Debian:14) | < 2.0.21-stable-2 | 2.0.21-stable-2 |
| debian linux | = 7.1 | No fix listed |
| libevent project libevent | = 2.0.1 | No fix listed |
| libevent project libevent | = 2.0.2 | No fix listed |
| libevent project libevent | = 2.0.3 | No fix listed |
| libevent project libevent | = 2.0.4 | No fix listed |
| libevent project libevent | = 2.0.5 | No fix listed |
| libevent project libevent | = 2.0.6 | No fix listed |
| libevent project libevent | = 2.0.7 | No fix listed |
| libevent project libevent | = 2.0.8 | No fix listed |
| libevent project libevent | = 2.0.9 | No fix listed |
| libevent project libevent | = 2.0.10 | No fix listed |
| libevent project libevent | = 2.0.11 | No fix listed |
| libevent project libevent | = 2.0.12 | No fix listed |
| libevent project libevent | = 2.0.13 | No fix listed |
| libevent project libevent | = 2.0.14 | No fix listed |
| libevent project libevent | = 2.0.15 | No fix listed |
| libevent project libevent | = 2.0.16 | No fix listed |
| libevent project libevent | = 2.0.17 | No fix listed |
| libevent project libevent | = 2.0.18 | No fix listed |
| libevent project libevent | = 2.0.19 | No fix listed |
| libevent project libevent | = 2.0.20 | No fix listed |
| libevent project libevent | = 2.0.21 | No fix listed |
Show 4 more
| Product | Affected versions | Fixed in |
|---|---|---|
| libevent project libevent | = 2.1.1 | No fix listed |
| libevent project libevent | = 2.1.2 | No fix listed |
| libevent project libevent | = 2.1.3 | No fix listed |
| libevent project libevent | = 2.1.4 | No fix listed |
References
- Debian Security Tracker CVE-2015-6525 vendor-advisory
- [Libevent-users] 20150105 Advisory: integer overflow in evbuffers for Libevent <= 1.4.14b,2.0.21,2.1.4-alpha [CVE-2014-6272] mailing-list vendor-advisory
- DSA-3119 vendor-advisory